Counterargument: the closest hardware we currently have to ARM Macs is probably... Intel Macs.
The "Apple is going to lock down the Mac just like the iPhone" narrative has been with us since, well, the iPhone. But despite the alarm at tighter security measures in more recent versions of macOS, that hasn't happened yet -- and if a Secret Nefarious Lockdown Plan (tm) was going to come to fruition, the year that they shifted CPU hardware and radically redesigned the operating system's UX would sure as heck seem to be The Perfect Moment. And it still hasn't happened.
Past performance is not a guarantee of future returns and all that, but I don't think there's any reason to think Apple is going to make it any harder to run different operating systems on Apple Silicon hardware than they do on Intel hardware. (Of course, I don't think there's any reason to think they'll make it easier, either.)
On Intel macs the default was that it would run windows as long as Apple did not make substantial changes to the uefi, etc.
But arm macs are really an Apple A series processor plus a number of coprocessors like the t2, nueral engine, etc.. and the default is that windows will not work on this specialized hardware.
So unless there’s evidence that Apple is actively going to help 3rd parties develop operating systems for the Mac, the best we can hope for is a fairly acceptable OS with reverse engineered drivers for those chips. We’re either going to get an unstable OS or a severely crippled OS.
With intel macs Apple just had to stand back and let 3rd parties do their work. But they would have to actively assist with arm macs.. and there’s no indication theyve ever done that much less intend to do so in the future.
That's false. The ARM chips are tightly integrated SoCs. They aren't even close to a dropdown in replacement as "just" a new CPU would be. The internals of the ARM Macs will be much closer to the Ipad then to the Intel Macs.
And I don't think it's a coincidence Apple is slowly but surely moving OSX towards a locked down platform. It's already made pretty hard to run normal software.
The "Apple is going to lock down the Mac just like the iPhone" narrative has been with us since, well, the iPhone. But despite the alarm at tighter security measures in more recent versions of macOS, that hasn't happened yet -- and if a Secret Nefarious Lockdown Plan (tm) was going to come to fruition, the year that they shifted CPU hardware and radically redesigned the operating system's UX would sure as heck seem to be The Perfect Moment. And it still hasn't happened.
Past performance is not a guarantee of future returns and all that, but I don't think there's any reason to think Apple is going to make it any harder to run different operating systems on Apple Silicon hardware than they do on Intel hardware. (Of course, I don't think there's any reason to think they'll make it easier, either.)