This is just a personal anecdote, but I was speaking from past experience. Perhaps things have improved now, but back when I seriously used Linux on my own PC, the 2-3 times when the system randomly stopped booting properly and had to be tinkered with for me to be able to do anything with my computer, all of these issues were caused by something (Nvidia) GPU-related.
The situation is much better now. I've never had any issues with using the proprietary drivers on Arch on wayland in the past few years. If anything, AMD's drivers are noticeably more buggy.
