I have been hearing that matrix dendrite is no longer being worked on (at least unless people volunteer). I know that you cannot use element x which isn’t a big loss for me. I only plan to use it for family, friends, possibly friends and family of friends.
The big loss for me would be in the privacy category of things.
I have tried getting synapse to work but only managed to have it work with sqlite3 database. I don’t know how to get it to communicate properly with my postgres database for some reason. (I am using docker on ubuntu).
I 've been using Element X with my dendrite home server in the past. However, you will apparently miss out on all the Matrix 2.0 advantages.