HN is a very skewed place that's into some very niche stuff. That can be fine, it's good to be interested in new things, but no one should draw too many conclusions from trends we see on here.
Just to poke a few HN bears by way of example:
* Rust will never see widespread adoption. It's just hard and complicated, so seems cool and exclusive. * Lisp isn't gonna happen either, and that's because it's not even a good choice for most problems. It just feels really really cool when you write something in a purely functional way and so you imagine that _must_ mean this is some higher plane of existence. Not really, we've had 30-40 years for this thing to take off, not happening. * Even Erlang, while really cool, is just a super niche thing. If you're making a huge messaging service then definitely go for it, but you're making a website? Choose pretty much anything else.
There's a lot of reasons for all of the above (low average amount of experience leading to long term memory loss for the industry being the big one), but this comment is too long already and everyone's just going to be mad about the Rust stuff anyway.