Aren't up-to-date libraries fairly important for steam?
The most important libraries for Steam are things like Mesa, which Fedora updates on a rolling basis along with the kernel.
https://src.fedoraproject.org/rpms/grub2/tree/rawhide
Some of these are pretty questionable, particularly disabling the use of "grub-install" on UEFI systems (https://bugzilla.redhat.com/show_bug.cgi?id=1917213)
Mesa and the kernel would be less important, as all the hardware needs to be supported by them on release.
That's not the case w/ the Fedora release cycle. Like I said, it's only slightly behind Arch.