@darkmatter343 ok so they replace the complete board and all components are new.
What they do with the old logic board? I don't think they will give it to you. So they are basically stealing the good components from you

I believe that they are repairing the board and sell/use again in refurbished...
So this is a scam basically as this board is yours you paid for it and they are selling it again
If they do scrap the part, then thats bullsh..t as is not really environment friendly to generate so much ewaste just bcs of one failed IC or whatever.
If the scrap is true, their statement that missing chargers are bcs of saving mother earth is just excuse to generate profit

as the scraping of the parts generate much more ewaste imo
Apple does not even let authorized 3rd party service centers keep the defective parts, and this has always been the case, not just today. It's not so Apple can fix the part and double dip on the resale of the defective part, it's because they don't want extra parts floating around on the aftermarket sale. They also don't want anyone to be able to buy a replacement mainboard off ebay and do the repair themselves, it's all very tightly controlled. As far as I know, you have to be mad certified to even be authorized to order replacement parts from Apple, and they are
very strict with making sure the defective parts are returned to ensure the defective part wasn't falsified defective, and or repaired and then sold on ebay etc...
Call it how you will, a waste, bs... but Apple has always operated this way, everything is tightly controlled in the supply chain, including factory OEM repair parts.
First , thank you for your extensive input . You are certainly right and the cost to repair could be justified in the way you present it . However , the 760 euro cost is to me excessive and is economically unjustifiable. My A1706 laptop with standard 256gb/8ram configuration with 32 months of use ( even in its prestine condition and very low battery cycle count ) is not worth much more on the second hand market than the repair cost . As mentioned before the idea was to buy a new one in a couple of months and pass this one on to my teenage son : he inherited my previous MacBooks , IMac and IPhones. Apart from broken screens and cracked laptop trackpad because he sat on it ; none of these have stopped working even in his destructive hands . To conclude all this : I have two mayor problems with Apple : one is the total absence of any explanation of what and why this Logic board /SSD failure happened and secondly the elevated cost and total lack of even the slightest consideration that the laptop is only 8 months over warranty and no commercial gesture towards repair or replacement is offered . This is obviously Apple’s commercial policy and they are free to apply whichever they want . Somehow I just can’t swallow it . My reaction is perhaps more emotional then purely economical ; to me it is like the friend you always blindly trusted and you find out he has betrayed you . Trust is gone . Even if I buy a new MacBook tomorrow, I will dread every start up and wonder if that flashing carpet will appear... could be a clever move from Apple to make me buy a new one every 23 months and not 36/40 as I used to . No , Apple I still like to make my own little decisions . Programmed obsolescence will be the next subject?
Ok, I'm probably going to play the devils advocate a bit, but I'll try to answer some of what you mentioned.
Apple can't explain to you what exactly happened to the SSD for a few reasons. First, even their genius bar techs as well service technicians are not that knowledgeable to break down exactly what happened inside the SSD. There are so many tiny components to the SSD, it could have been any number of things that went belly up, and unless you're Luis Rossmann you're not going to get the answer you're looking for, nor is anyone *you can actually talk to* authorized to explain what happened, again, assuming they even had the equipment to find out. (Which they don't)
So, with the warranty issue... here's the thing. From my 2 decades in the PC repair industry, I can tell you if any one company has sympathy, it's Apple. Dell, Lenovo, HP, Asus, they would be the last companies to give you a break if you're out of the 1 year warranty period. Didn't buy our Pro Support warranty... too bad for you they'd say. Now... this isn't to say Apple is the exception, or the saving grace, because they are not, clearly in your case.
All companies, be it Samsung, Apple, Dell, etc... they are out to make a profit. Period. They want to charge you upfront for upgrades that you can't do yourself later on, and they want to sell you warranties, because a large majority of people who do buy the warranties... never have to use them, so it's 100% profit for them. Exceptions and breaks are given, but it's rare.
My sister bought an ipod in the Netherlands, and then dropped it well after the 1 year warranty had expried. On a visit to Canada, she asked me if I could drop into the Apple store and talk to the genius bar folks. Apple replaced it right there with a brand new one. Out of warranty, accidental damage, and bought in a completely different country.
I've heard countless stories from people who had ongoing issues and were given full refunds outside of the 1 year, or had parts replaced and repair costs waved. Obviously, it would be awesome if Apple did this every time, and treated all customers the same, but they want to sell you the warranty, and can't make exceptions for everyone.
That all said, I do get your frustration, anyone would be mad upset if a laptop that was less than 2 years old died, but that's just the unfortunately nature of electronics. Always buy the Apple Care on Macbooks. Always. I know... I know... we shouldn't have too because we pay so damn much for the devices but it's thousands of miniature electronic components that make up the motherboard and Apple nor Samsung nor Dell have control over if one of those components had a bad production run in the factory, and so one tiny resistor wasn't made to spec, and took out your SSD. But yes, It sucks, I get it.
Anyways, personally, I think Apple should have sliced that repair cost in half for you, 760 euros works out to over $1000 Canadian and even I would be upset but I just have a little more understanding since I know how stuff is made, and what's entailed in the repair. I wouldn't give up just yet... I would try to visit another Apple Store, or go back to the same one and speak to someone different, hopefully a manager, and even if you have to tell them a sob story, just ask them for a break on the repair cost. If you're polite, and easy to deal with, most companys will go a little extra way for you. Good luck!