I love elm! It changed the way I program in every other language. Its philosophy resonates with me.

What happened with it? Not much. It just continues working and being useful for the people that use it.

Some folks have started working on a fork of the language, called gren.

Also, last year a package was published that added a different way of interoping with javascript (elm-taskport).

Appart from that, the language is pretty stable and solid in its niche. I don't see it going away in the next 10 years at least.

There's elm, a statically-typed language with none of the pain points you described. So my short answer is: Compared to javascript, yes, it's worth it. Compared to elm, no.

Compared to javascript, yes. Compared to any other simpler statically-typed language, no.