Jitsi ALSA and routing to JACK

I’m trying to route Jitsi to JACK, following this article:
https://alsa.opensrc.org/Jack_and_Loopback_device_as_Alsa-to-Jack_bridge

But the sound is a garbled mess. Is there some specific configuration to get snd_aloop working with this, or is it just incompatible with PortAudio?

I see this article that claims ALSA is coming to Jitsi, is there a beta release for this yet?

This is a proposal for google summer of code which never happened.
Pulseaudio is the preffered one for Linux.