If you're on Linux AMD is clearly superior because NVidia has Linux performance issue compared to Windows so you're ending up paying more for less. However NVidia has the monopole for a reason their product are superior but at what price ? Also if you want to avoid proprietary drivers AMD gets the win too.
I do think AMD is the better option for anyone that spend less than 800-1'000$ on a GPU even for Windows gamers. Personnaly I have made the switch from NVidia to AMD 2 years after ditching Windows for Linux, Never looked back even though Cyberpunk2077 looks amazing on NVidia RTX and some other things.
I have upgraded last year to a RX 7800 XT and have no regrets on spending that money.