Sure, if you want to linger onto old versions of the OS, but once Apple quits supporting Intel it will be over.

So maybe I'm calling it early, but it will at some point be pointless to continue running the old Intel systems.

Can’t emulate or spoof m series chip?

with what? the m series is everything on the chip. you're suggesting an Intel CPU an Nvidia GPU and a bunch of RAM sticks to be emulated to present itself to the OS as a single device?

Not sure. I assumed there could be some way to lie to the os like how you can spoof other metadata about the device to other software.

Not at any usable level of performance. It's a completely different hardware architecture.