You can still run x86 binaries on new macbooks. They don't stop working entirely. Using wine I can even run x86 windows binaries.
By that point they already hit the developers enough to get them to port to aarch64
(arguably though this could be a special case because it is due to architectural transition)
I ask because my current laptop is getting long in the tooth, and if I were just buying it for productivity stuff, the current MBPs are beasts, but last time I checked years ago, gaming on os x was in a sad state, even compared to linux.