Arch Linux

Description:

Steam needs the lsb-release package to be installed in order to detect the distribution name correctly in its "System Information" report. If this package is not installed, Steam will report a generic "Linux (64-bit)" name.

Since lsb-release is not installed by default, a lot of Arch users unknowingly have this issue and it is causing headaches for databases which rely on the system info provided by Steam, like protondb.com or the Steam website itself : if you go to https://store.steampowered.com/hwsurvey/, you'll see that the second most popular distro is the generic "Linux (64-bit)" (although there may also be some snap/flatpak shenanigans going on here).

Suggestion : make lsb-release a dependency of the steam package.

Steps to reproduce:
Uninstall lsb-release, open Steam, got to Help->System Information, scroll down to "Operating System Version".