[voltagex_]

You are probably in a better place than me to really push them on Linux support.

Mediatek's Linux support seems reasonable, but I've only had experience running the AP cards in OpenWRT, not the little baby client cards.

[NewJazz]

FWIW I use my MT7921K as an access point. It can only do one frequency at a time (2.4/5/6GHz), and I haven't tested the 6GHz capabilities, but I've not had much trouble with it so far.