Wireplumber broken system audio in archlinux - SOLVED BY UNINSTALLATION
This issue happens as soon as I try to open vivaldi-stable web browser, all my system audio goes capult and nothing works even steam fails to launch games properly; at first I thought this was yet again another issue with nvidia drivers, but reverting installation to pipewire-media-session-1:0.4.1-2 - which in turns uninstall wireplumber - solved the problem.
I'm also on an archlinux system here. The update to wireplumber coma to me as an uninstallation to pipewire-media-session.