I have used Clojure(JVM), Elixir(so Erlang) and a bit of Golang professionally too. So my opinion "is informed" too for that matter, but this kind of appeal to authority adds nothing to the discussion.

> I am not denying that the JVM might have almost caught up in the meantime. More than a decade ago it did not.

This presupposes that the JVM had something to catch up in the meantime. Again, this lacks nuance and brings nothing to the table. The JVM makes different trade-offs than the Erlang/Golang VM does, and has different strengths and weaknesses. Both of your comments completely ignores that.

> It's just that in my work I have found having to avoid them still worth it compared to the alternatives (global mutability and more primitive parallelism which was the case for the JVM for decades).

Clojure runs on the JVM and avoids mutability pretty well. It is amazing for writing concurrent software, and has been for many years(i.e more than a decade ago).

> Similar to the weird childish name-calling people do in Rust threads

I've seen people do similar things to the JVM.