Forums in general have been dying out for a while now, unfortunately. I think this was back in August 2015 and at the time, I was an active member of some now-dead forums on the ProBoards network and I distinctly remember looking at either laravel.io or the Laracasts forums to gauge reaction.
I see. All I have left is this and the programming subreddit. The latter suffers a lot from new programmers and unrelated content (something like „I wrote my first HTML Tag today). Programming language specific subreddits suffer from a low number of subscribers. YC suffers from elite mindsets and arrogance (most notably on topics like modern javascript)