…a. There was some interest in Scala by some teams, and we had a few services already written in it. But the complexity, pain to work alongside a Java codebase, and slow build times made that language unappealing to most of us.
Most of these sound like the same objections to Kotlin. And wasn't there any sense of déjà vu when learning Kotlin? Like this When thing sounds an awful lot like Match-Case...
I've often heard the thing about slow build times. It hasn't been my experience, but that could be because I only started with Scala a couple of years ago (presumably builds have gotten faster) and I haven't built anything large with it.
P.S. I answered a Quora question with the the very same headline this morning.