It's possible. The last time I bought an AMD GPU for my personal use was in 2009 or 2010. But I really do work with this stuff every day. In our QA lab, the AMD machines have far more problems than the Nvidia machines do. Valve's VR software works much less consistently; installing modern versions of the drivers on Ubuntu is a huge pain, you have to use 3rd party repos maintained by some random guy; missing features and driver bugs are much more common on AMD (though not unheard of on Nvidia either).
AMD is definitely getting better, and being open source is an enormous point in its favor, but it's still just less usable day-to-day for an end user. I hope this changes.
Unfortunately very few Linux people even see a point in actually using their GPU. As long as it can composite terminal emulators, they think everything is great. I've seen such reasoning in discussions about sway, where people are encouraged to throw out their $500+ GPU in favor of the on-die Intel GPU...
AMD is definitely getting better, and being open source is an enormous point in its favor, but it's still just less usable day-to-day for an end user. I hope this changes.