A mate of mine is a 100% Linux user, Manjaro, he thinks, and he gets this from experience, Nvidia are garbage on Linux, he has ran all AMD on Linux for some time now, he's far from alone in that.
I am in his camp, 100% Linux 100% anything but nvidia partly because nvidia's proprietary drivers require the system to contort around it (doesn't update in lockstep with the kernel so there can be incompatibilities requiring old or patched kernels, stuff like that) instead of how it should be which is open drivers in the kernel (anything after X date works this well Y date this was added etc). Some people swear by the nvidia proprietary drivers, more power to them but not for me.
AMD's open drivers are a good thing, they follow the open ethos and they do things the Linux way on Linux as it should be, but they're far from perfect. Stray an inch from the trodden path of a GPU being a thing to spit out images to the screen, and you're in dangerous territory (sometimes, maybe, possibly, that's where the jank comes in there are hundreds of weird issues floating about best hope you don't stumble into them). It's particularly exercising the compute elements that trip me up, some workloads will not have issues others will it's a crapshoot. What used to result in a kernel panic (full crash or session logout) often now results in a GPU reset instead with a single application crash, so things have improved and are improving, but the progress is far too slow I've been following this for many years. They need to invest serious resources into software development which they've supposedly ramped up a little bit recently, no where near enough.
intel has open drivers built into the Linux kernel too, I'm a happy boy having potential competition tailored directly to me. They're not free of issues (lower performance relative to windows particularly in games, some software sees intel GPU assumes iGPU and misuses the card, etc), but I haven't had the GPU hard crash yet and I've been trying. I'm sure those sorts of things happened to early adopters of alchemist, but the drivers at this point seem solid at least.
I want both companies to succeed for some competition. Honestly I think intel is pretty much there when it comes to software support, what they lack is a mid range and I have high hopes for celestial.