This is similar to my situation with Gentoo. Across my Gentoo systems, I have exactly one package installed from an "overlay" [0], and that's Steam. Everything else is straight out of the official package tree.
[0] ...which is -IIRC- Gentoo's term for a user-provided and entirely-unvetted collection of packages...
[0] ...which is -IIRC- Gentoo's term for a user-provided and entirely-unvetted collection of packages...