Still I think, It will survive. The shift will take at least 3-4 years, even after that the Apple will likely support older architecture for at least more 3-4 year(like switch to Intel from powerpc). There are also chances of a emulation based solution to run newer Arm64 apps to current mac computers, because it is most likely not possible for every developer to re-develop the apps.

This buffer of multiple years will also help enthusiastic individuals/hacker time to do research an break newer mechanism of hardware lock for os. ultimately, I think It will survive but with some road-blocks.

and in my opinion, if someone is trying to build hackintosh for now, he should gracefully proceed. as current system is at least expected to work for next 5years.