I worked at a Scala shop about 15 years ago. It was terrible. Everyone had their own "dialect" of features they used (kinda like C++.). The tooling was the worst (Eclipse's Scala plugin was especially awful, IntelliJ's was okay.) The compiler was slow.
Yeah I had a similar experience, it was the worst dev shop I've ever been a part of. I tried it again 5 or so years back, it was a bit better but still a lot of SBT strangeness and unneeded abstractions
I'm assuming it's better now?