AMD has the worst open source drivers for Linux. Pretty sure Ryzen APUs still aren't even properly supported. I would love to use AMD on everything, truly would. They are the best for a tight budget but the support just isn't there.
Worst Open Source driver? In my universe that might be lima (no offense to the devs, I think freedreno, etnaviv and videocore drivers are a bit better and I don't think there is a PowerVR open source driver yet)