focus was on m2 to get the release out because that is where almost all the users are.
As a result, I was the main one working on m3 before the new year, and got it through to Linux kernel loading (ie m1n1 works) and running macos under the hypervisor. Patches are submitted.
I also happen to be the one doing a lot of the wifi work.
Wifi and Bluetooth work fine on m3 - the chipset is the same as the m2.
It's listed as not working because there is no released Linux support yet.
For anyone who doesn't make using Apple hardware the top priority, might be a lot easier to just find more-open laptop hardware that you like, and use stock Debian atop that.
A large list of things that don't work and are not even being worked on doesn't sound enticing.
Things like HDMI, WiFi and Bluetooth don't work and are not being worked on.