Matrix feels akin to trying to tell my (non technical) friends that they should use HTTPS as their social media site. I think it's technically more capable but trying to explain what you can do, how to get started, or why it's better is a much higher bar than something like Signal.
Absolutely correct, I just did that this weekend: big effort trying to explain all pros vs cons and the its technical background and future outlook, prepared test chatroom, wrote simple instructions to create account and try it out => got ignored, failed miserably, hehe :)