Yes. I use Signal and SimpleX.

95% of the people in the world do not have Signal installed. That makes 95% of my communications less secure because now the only way they will converse with me is SMS. It's all about layers of security and privacy. RCS the way I had it configured was at least E2E encrypted, which is better than everything being cleartext.

I'm sure I'll get the ironed out. My closest associates are on it, but my parents, etc will never use Signal.