The Intel era was great for a while.
The transition was handled very smoothly, we got more power, Win on Mac, less niche hardware, Steam with so many games.
Then AMD stopped being a proper competitor, Intel got lazy and released stagnating updates, the world moved toward laptops, ARM got really good.
My M1 Mac Mini is still incredible, but I miss a lot of things from the Intel era.
This is a good summary of how it felt to me as well.
While I appreciate longer-term support, I also get why you'd want to drop it when I compare the final generation of Intel Macs to the first generation of AS ones--I have a final-generation maxed-out i9 iMac and the performance difference (not to mention noise difference) between it and my aging M1 Max MPB is really substantial--one is starting to feel old and the other I wouldn't know wasn't brand new except the space bar is sticky.
It's even more noticeable when I compare the higher-end Wintel laptops at work to that same MBP--they're several years newer and "nice computers" on paper, but the performance (and battery life, and fan noise) make them feel crusty and ancient.
I can't honestly say I will mist much from the Intel era. Being able to boot into Windows is pretty much it, and even that I only did to play through VC4, so despite it being an option I haven't actually bothered in years.
Looking at where I stand for macOS 27 at work, there's going to be almost no impact--about 70% are HP crap in the printers folder (no HP printers in the building even if they don't have AS versions), 20% are Ricoh printer crap (we do have a Ricoh printer but the actual driver is fine so shouldn't be any effect there either), and 7% are random old things that I didn't even realize were installed.
The sole app that will actually be noticed is Google Earth Pro, which still doesn't have an AS version and probably never will. The lack of that might actually be an issue if I can't do what I need to on the web.
Why do they do this? The code is done, no updates have been made to my knowledge and they can just leave it in. Ugh.
It's not like Apple is telling developers to remove support, they're just saying that they
can remove support if they want. If the developers see a market for continuing to offer Intel support, they will.