Signal is PGP over texts and now its simply a good UI on end to end encryption with PGP basically.
We still have to build privacy tools, yes, but there's no friction to using Signal vs Messages. It's just people don't really care.
That's the thing.... people don't care about privacy. They care about sound money. They care about having the power to decide, even if you know I have Bitcoin, try and get it from me. You won't be able to. Even the strongest government in the world will have to convince me to help them acquire that.
Privacy is useful and some people want it. Sound money is essential and one is a slave if you don't have it. Priorities.