Having recently made the leap to Linux in April as my only computing OS, and wanting games to work on it, I deliberately went with Nvidia as my GPU, which has historically had better support from the Linux community than AMD processors.
I'm glad it's working out for you, but, uh... this has not been the case in about a decade. AMD has had an (official) open source driver stack for a long while now and it has made them a very popular, well supported, very compatible option for linux gaming.
NVIDIA GPUs work fine, for the most part, but they only offer a closed-source driver and provide zero help to the community actively trying to develop an open source driver (because they don't have one they support themselves). So to say they've had better support from the community is stretching it pretty far.
