Yes of course, they use older Kernels and still use Pulseaudio.
With F34 the sound server changed to Pipewire with pulsaudio-plugin
F35 came up with Wireplumber as Pipewire session manager.
To debug use:
Dnf upgrade to fedora 35 beta; no sound device - #2 by ilikelinux
To catch up please read the change-logs and follow the links to the additional wiki pages:
Releases/35/ChangeSet - Fedora Project Wiki
Releases/34/ChangeSet - Fedora Project Wiki
p.s.
Could you please give us more infos as :
inxi -Fzx in terminal and post the output as </> Preformatted text here.