Valve seeing increasing bug reports due to Steam Snap - other methods recommended
(www.gamingonlinux.com)
Not really, usually Steam packages on distributions aren't maintained by Valve. The only exception are .debs from their website. Even the Steam flatpak is community maintained.
I've had no issues with steam on nixos/nixpkgs. Flatpak also had it's fair share of bugs and games not working because of flatpak and proton using bubblewrap for sandboxing. Snaps sandboxing might cause those issues too, so hopefully they'll be fixed at some point (or even better, Ubuntu switches to flatpak for desktop apps).