Oh, thank you very much for chiming in! That twist on Asahi x M3+ was interesting - is that because something wasn't ported yet and the support will be there one day, or there'll be a hard block for Asahi forever for M3+?
From what I understood, the CPUs are different and need work for them to be supported. There is no hard block, but sadly, two key people resigned from the Asahi Linux team.
I am not even sure if there is someone even trying to work on this.
Another example is microphone support on M2 series that's not there yet.
Many issues with Asahi are also that there is an incompatibility in page sizes (16k on MX vs 4k on most CPUs), and combined with the usage of ARM, software compatibility is an actual problem if you want to use VMs, DAW software (nothing will work there except Reaper ...)
(Maybe this paragraph was a bit ranty, but I'm actually very glad we got Asahi in the first place. It's my daily driver and I'm relatively happy with it)
TL;DR: no hard blocker but there is a people "problem"