Have to link to that because I chuckled at your post.
Is that relevant though? ;) I don't think "using mobile phone as a wireless headset" is a primary use case for low-latency P2P apps and I certainly wouldn't propose using PulseAudio instead of such apps for, well, low-latency P2P communications.
Though PulseAudio doesn't really minimize latency ...
It seems on par with a Bluetooth headset to me. Of course you have to use it over LAN and not over the Internet, but I don't think that's an issue for this particular use-case.
Could you elaborate on your setup an usecase?
I just enable zeroconf discovery and allow network access in PulseAudio on my laptop and my phone, so both devices automatically see each other as a regular audio device. You can do that from UI via `paprefs`.