Let's not forget the shock image spam issue. Public Matrix channels are plagued with horrendous shock images (including CSAM). The development team seems to not care, they have a proposal for "policy servers" which is still incomplete and not supported by all server implementations.

It’s terrible. I had to leave most channels on the matrix.org namespace because they won’t properly moderate their own server from CSAM. I dropped to 7 day media retention to lower legal liability on my own server, since there’s no way to know when one of my users will be in a channel hit with abuse.

At this point the majority use case I have for matrix is to bridge to IRC with heisenbridge and be able to use signal on my laptop through mautrix-signal and nheko. The number of native channels I’m in continues to shrink.