Everyone is so hung up on "repairability" and I think you're confused on what this means. You mean to say user repairable. No the newer models are not user repairable. But they aren't unrepairable. You bring them to any Apple Store or other apple service provider (locate.apple.com) and they can repair your machine to their hearts delight. Why? Because Apple is also a company of high quality. And you, Joe Schmo, may not be the most qualified person to be repair sophisticated pieces of hardware, and you might Ef it up. So it's protection for the brand and also user experience. Apple is the Ritz Carlton of the tech world. You don't do your own laundry at the Ritz, nor would you be expected to repair your own machine when you buy into the Apple brand. Apple and their courteous and trained technicians will take care of that dirty work for you so you can enjoy your day and get back to work faster.
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I'm sorry, but no, I cannot let that stand for others to read and think that might be entirely correct.
No Apple Store or service provider
actually repairs components. For example they open a MacBook with a defective logic board and replace it with a completely new part and then charge you 500+ bucks for it.
And no, they do not actually send this defective part to some fairy elves to get it repaired so it can be reused later. In the best case it gets shredded and some stuff might get broken down and then reused for the production of completely new parts.
But this whole process is extremely wasteful, especially since Apple has diagnostic software tools that can show pretty specific which little piece of the many many possibilities on logic board is acting up and preventing the Mac from operating properly. In many cases, it's just broken soldering that could be redone in a matter of minutes with the proper tools/stations that are common in "real" electronic repair shops.
Additionally they do just about anything to keep these helpful diagnostic tools under wraps so customers don't get the silly idea that they do not actually need to pay such a high price for a repair that is consciously set so high that the customer is "tempted" to buy a new computer instead of getting it repaired. Their internal purpose is to locate possible widespread production failures so that these might not affect future generations.
Imagine your car breaks down, you can only get it repaired at a shop 200 miles away by a "special service provider" that tells you that the entire engine needs to be replaced when in reality you just need a new spark plug.
As for the "niceness" of Apple taking in defective computers and getting them recycled "for free": In many countries it's the law that any store that sells electronics is obligated to accept defective electonics brought in by people even if they hadn't been bought there and have them recycled properly. Improperly dumped electronic waste is a big no no for the environment so these laws are really important.