Outside of iOS, is there really any traction for Swift development? It certainly feels like it is settling into an also-ran position. And really, mobile apps are turning out to be a dead-end, and people don't seem to be actually investing in native clients anymore, they just slap their website in a browser control.
As an Apple fan and a programming language nerd, I have basically no interest in ever using the language. I spend a lot of time in C++, Haskell, Rust, and Kubernetes, but Swift just feels pointlessly complicated to me. (C++ I think is also pointlessly complicated, but the rest at least have a point ;-)
https://news.ycombinator.com/item?id=17278175