My sister and wife and parents aren't going to use Matrix or SimpleX. The no account or password, you just install on your phone and it's like iMessage basically sells them in a way I could NEVER get enough buy in for anything else. The way I see it, Signal's primary problem is the metadata availability, but the government knows I talk to my family, presumably, what I want to hide is the contents, which are as far as anybody knows, E2E as long as you're not using the Israeli Molly, but evil, app the Trump admin uses. I have tried since Threema to get these people on better platforms, Signal is a win in this case.