I tried Linux on my desktop end of last year (like I always did on about a yearly basis) and decided that if I was gonna make the switch, I needed an AMD card. NVIDIA + Wayland had a lot of flickering issues and whatnot, but I didn't want to use X11 because Wayland has way better support for multi-monitor with different refresh rates and also VRR.
So, I sold my RTX 3080 and got a Radeon 7800 XT and switched to Linux on my main desktop full-time January 1st. A few months later and NVIDIA finally decides to stop fucking around and properly improve their Linux driver. Could've saved a few bucks there (sold the 3080 for like 350,-€ to a friend and got the 7800 XT for like 550,-€, and the 7800 XT is pretty much in the same performance ballpark, so I spent 200,-€ on better compatibility/less pain).
Good to know that NVIDIA will be an option for me for a GPU upgrade in the future. It's always good to have more choice. While my experience with AMD Radeon under Linux was okay, it wasn't really perfect either. I had the odd crash here and there with kernel versions from earlier in the year (6.6), 6.7 had black screen issues with RDNA3 (maybe RDNA2 as well) after standby and hot restarts (fixed in 6.7.4 or 6.7.5 iirc), and ever since 6.7 I have stability issues with enabled VRR and multi-monitor as well, unless I force the memory clock to stay at a higher frequency. Then there's also this issue that just got fixed with 6.10 it seems.
So if NVIDIA really ups their game now and consistently improves their Linux driver, I could see myself going NVIDIA again. I'm also excited to see what Intel has in store though.