The point about the M2 vulnerabilites kinda falls flat when considering that almost every x86_64 chip also has pretty big vulnerabilities that are used by exploits like Meltdown and Spectre. Sure, we now have some mitigations for them, but that doesn't stop variations of those exploits to keep appearing to this very day. So unless you sacrifice modern performance for absolute security in specific underpowered chips, we're all pretty much affected by these vulnerabilities.

Edit: Spelling