But the forum is at least still available. It just needs some professionals talking
My observation over many years on the matter: Communities lives from the beginners and advanced users. The beginners contributes 95% of the questions. The advanced users answers 95% of the questions. And leave at one point because there is no benefit and gain left for them anymore. That’s a pretty normal behaviour at a community page. And all is fine as long as enough newbies arrives that progresses from beginner to advanced. Usually a user at a community page is active for 3 to 5 years.
The fatal part is that fewer and fewer beginners enters forum communities in general. Which is nowadays also pretty normal, in all forum based communities. You find your answers at Youtube, Facebook, etc. . A forum as a community is just one of many possibilities nowadays. It has become a niche. And most question are answered already.
But i don’t think that a forum community in general will ever become obsolete. Google can just find what exists. And that’s in big parts still forum posts.
That the current forum software here sucks in many ways is another matter then …