Indeed, I do see your point, having to do with the misinterpretation
of the word "missing". It was not missing from the system; it was
missing from the example that had been posted the day before. The
example that had been posted the day before showed the invocation of
pipewire and pipewire-pulse but did not show the invocation of
wireplumber. When that third missing piece was added -- when wireplumber
was invoked after the invocation of pipewire and pipewire-pulse --
then sound was available to PulseAudio clients (which immediately
became unavailable again, after "pactl load-module module-native-protocol-tcp"
rendered pipewire-pulse inaccessible to client programs that lacked
the PULSE_SERVER environment variable).