I tried to look how to restart pipewire and according to Troubleshooting · Wiki · PipeWire / pipewire · GitLab there should be a systemd unit.
But in my case there is none:
systemctl status pipewire Unit pipewire.service could not be found.
I’m using F35 Kinoite, so it’s possible that this is some specific thing on ostree OS.
So what is happening here?