I don't think I've talked to anyone who has gotten "over the hump" with TS and felt like they were missing something from JS - I may be in a bubble though. It's almost frustratingly beloved in my experience.
My view is that I’d use TS if I have to but I’d pick either plain JS / CLJS or something like purescript if I really wanted types.
People argue for a toolchain that takes a static language, compiles it to a dynamic one, then runs it with an interpreter on the server side.
Humanity ended shortly thereafter.
Although TypeScript can be added incrementally, in practice I've only seen it totally replace JavaScript.
While I do believe more people prefer TypeScript over JavaScript, I think it's because those people never deep dived JavaScript or bothered to learn it enough to see how powerful it really is. There are also people that just prefer typed languages and will shun languages without static types.
This really is a religious war and boils down to one's opinion. I like JavaScript without typing.
What power am I no longer able to leverage using TypeScript when it's appropriate to do so?