Yeah, these days Btrfs is solid and well proven for many use-cases, but its old reputation will probably never go away, at least on reddit. Interestingly BcacheFS have a great reputation, despite not being in Linux , having a way to go yet and only having one single developer which is a big problem, I think Linus worries about that too.
If it lives up to everything Kent Overstreet says about it, it will be a great filesystem and I'll be happy to use it, until then I'm doing good with Btrfs. On my PC I'll probably never notice any difference between the two.
I'd say use EndeavourOS and if you choose NVidia in the menu when you boot the installer it will install the distro with NVidia drivers from the start and there's nothing to fiddle with. The updater (called yay) will henceforth update NVidia drivers as needed. It's one of the most handsfree NVidia experiences there is as kernel and driver updates are automatic via Arch.
I also suggest installing apps via Flatpak, this way there wont be problems with library versioning and system and apps are separated nicely. You can install KDE Discover for example to have a GUI app "store" that supports Flatpak. Just make sure to have the right Desktop portal installed. I run KDE but for some reason needed both the kde and gtk portals to get nice fonts everywhere.
You install stuff with Yay or Flatpak, e.g. "yay -S xdg-desktop-portal-kde" or "flatpak install com.valvesoftware.Steam". If you use Flatpak install Flatseal, it can handle permissions, for example you can give Steam access to another folder you want to use for games, for example I use /home/protonbadger/Games/ and gave Steam access to the folder this way.
SUSE Tumbleweed is a good alternative and more polished for desktop users, but you'll have to install NVidia drivers manually afterwards, there are wiki guides and youtube videos showing how. Occasionally when a new kernel update comes out the NVidia drivers trail a day or two so be aware of that on SuSE. NVidia have their own official repository with SUSE drivers.
I suggest trying both first in virtual machines for a few weeks.