Telegram and signal are both central points of failure. Signal can be used with other servers, but the server address is hard coded in the app, so you have to deploy your own app. Matrix servers can keep a channel going even if the channel’s home server goes down. The more home servers there are, the more mirrors of public channels there will be.
Reminds me of Republicans questioning Ketanji Brown literally the only thing they asked about her was about how hard she was on pedophiles. The level of projection was palpable. Basically confirmed that all Republicans are predators.