This misses the point entirely. What happens when apple inevitably discontinues support for this hardware.

i have no idea how you think apple silicon will discontinue support for itself.

the hypervisor framework documentation, that i linked above, is pretty clear; the linux builds for arm run extremely fast on apple silicon because hypervisor framework gives them hardware access, in some subsystems directly (memory mapping for example), in other systems through a shim (graphics hardware).

The same thing that has previously happened with discontinued Intel Macs or PC hardware that is no longer supported by Windows.

You can still boot Linux natively on it.