This does still happen (e.g [1]), though I've no idea if the frequency of such posts has changed. If no-one asks questions, then there's nothing to answer (so please do ask!). On the other hand, I've noticed that more people have started to ask/answer questions on StackOverflow [2] so perhaps this just represents the general shift that other langs have already been through.

[1] https://sympa.inria.fr/sympa/arc/caml-list/2014-05/msg00146....

[2] http://stackoverflow.com/questions/tagged/ocaml