We've been steadily working away at P2P Matrix over the last few years & while there's still lots of work left, we're starting to see distant light at the end of the tunnel! So if you want to track our past & present progress, we're proud to present: 
https://arewep2pyet.com
Are We P2P Yet?Are We P2P Yet?arewep2pyet.com
@matrix P2P is going to be awesome. Hopefully the ActivityPub people could learn from the cool shit you do and possibly make a P2P Mastodon?