I'll echo the general impression. Even just using Matrix for direct messaging it's not something I am going to be able to pull any of my friends onto unless they already put the privacy and openness advantages very highly. It's just a pain to use, a pain to debug, and flaky enough you often have to debug it. It certainly seems like there's a lot of effort going into it but it seems to have resulted in a lot of churn but not much polish at any level.