The driver situation is less than ideal. Mesa got support for Mali but that's not the only GPU that comes with ARM chips and you get bonkers situations. E.g. with my rk3399-based NanoPC, a couple of years ago (haven't checked in a while and yes it's a Mali) rockchip's blob supported vulkan for android but only gles for linux as rockchip never paid ARM the licensing fees for that.

And honestly ARM is on the way down: Chip producers are antsy about the whole Qualcomm thing and Qualcomm itself is definitely moving away from ARM, as such my bets for the long and even mid-term are firmly on RISC-V. Still lack desktop performance but with mobile players getting into the game laptops aren't far off.