That "Why I'm Leaving Elm" post comes up on most Elm discussions, and I would implore anyone to give it a try for themselves before deciding against it. I've been working in Elm professionally for a few years now and I think Luke's experience in that blog post is certainly atypical.

For writing web applications Elm is an excellent language to work in, the compiler is friendly and fast, there are basically zero runtime exceptions, refactoring is a breeze, and it really shines on larger code bases. Web-components are discounted pretty quickly in that post, but they really fill an important gap where ports are awkward.

In the years I've been using it I haven't run across a problem that I couldn't solve in a nice way. That is not to say my experience is universal, but the negative posts tend to garner a lot more attention than positive posts, and I'd feel bad if someone were to skip over what is an awesome project due to them!