The hardware is great and it's impressive Asahi Linux works at all but it's not for everyone.
The question is when? How many generations behind will they be then? Will they have to skip support for some generations to keep up?
> m2 MacBook still outperforms any other kit I have
That's fair but you should consider what happens when Apple decides to lock down the boot process on newer hardware. I'm sure most people would give in and use macOS instead of going back to worse hardware.
If you don't see that happening just remember that all of Apple's other devices have a locked down boot process. They possibly only allowed it on Mac hardware to ease possible concerns people may have had during the Apple Silicon transition. Apple does not provide documentation for the hardware so Linux support is based on reverse engineering. If third-party operating systems do not support any of the recent hardware what is stopping Apple from cutting that unused feature from new hardware?
> preliminary m3 support just landed upstream in Linux this past week
Still way too early to actually use. GPU support is not there yet.
Naturally, a hardware vendor can lock down whatever they want in their future hardware, that's their call, but specifically Apple hasn't. Maybe they will, maybe they won't, but in either case there are still millions of m1, m2 and m3 mackbooks already out there, why _not_ use them?
If/when Apple chooses to lock down future 3p boot options, it won't affect that pre-existing pool of hardware. Sure, eventually that pool of will dry up, or maybe in a decade I'll need something faster than an m3 (assuming it takes less than a decade to get m3 to where m2 is at today, which is fairly conservative), but maybe not. My requirements are fairly modest with the personal dev work I do, I'm sure plenty of folks are in the same boat. We might as well use what decent hardware already exists and is available now. If appearing to support Apple is the problem just cover your kit in silly stickers, that's what I do.
After all, it's not like Apple will make a dime off me buying their shit second-hand anyways...