Rust may be “hot” but there are far more Java jobs than Rust jobs and I highly doubt that’s going to change anytime soon. And indeed Java developers have been highly employed for quite some time.
[edit] oh and the small/startup space is overwhelmingly Node + some front end framework + a bunch of cloud shit they probably don’t need and have mis-used and mis-configured. Take out Node, .net, and Java and hell, the next biggest segment I see is probably low-paid PHP (Wordpress mostly) work followed distantly by Ruby (mostly Rails, ugh), Python, and native mobile. Go, Rust, Haskell, Clojure, all that, rare as can be.
On the other hand, if a place needs Typescript, or GO, they'll mention it.
Every job I take, whatever the oldest crappiest technology mentioned in the footnotes is, ends up being 90% of my job.