That’s simply false.
Lol, which part? The part where I said they would turn it on if it was in the mainline kernel?
ideally, this package should gain mainline support in Arch before being evaluated for downstream inclusion in SteamOS 3.0.
https://github.com/ValveSoftware/SteamOS/issues/745#issuecomment-1059296256
Or the part where I said if it was stable? Or where I explicitly acknowledged the out of tree driver that's a PITA?
The main detail here to answer is if the package has widespread testing and support over a long term, there's a higher chance that a mainline package will present minimal to no additional overhead to maintain by SteamOS devs compared to an AUR package.
https://github.com/ValveSoftware/SteamOS/issues/745#issuecomment-1059302530
I guess thanks for doing the leg work on proving me right?