Depends on your hardware age, and whether or not you use proprietary drivers. Some distros handle it auto-magically for you so you don't really need to do anything and it just works.
ultra fast GPU access to storage
For the time being, nothing on PC actually requires this, or uses it optionally for any perceived I provment in fidelity. Its super cool tech though, looking forward to this in the future.
HDR
Fair point, it is actively being worked on by a lot of big organizations and developers, so it will get better. Last I checked Window's support of it isn't incredible, but its better than the nothing Linux has at the moment.
The wall most people have is that they dont have a capable monitor to use it well (miniled with fald or oled) both fairly expensive.
There are tips and tricks to get some applications working with auto hdr that was never designed to work with HDR (e.g you can get switch emulation with HDR with a name hack)
Nvidia drivers are alright these days but otherwise yeah. Most games are playable on Linux at this point with the huge exception of most online games with any anti cheat.
They are "alright" if you mean they work without meant issues, that is true.
What's far from "alright" is how every trimester they update and your distro breaks completely. Just s few months ago, every single Debian based distro simply started to black screen after installing the latest Nvidia drivers.
I fucking hate those titles and they make me automatically ignore them. who the fuck cares what you did Nathan and who the fuck are you that you tell me what I should or shouldn't do?