Why is WordPress not desirable for forums, services?

Question

CMS

What problems await the service on WordPress and why?
And are there solutions to these problems, or is it hopeless and should you just choose the right engine?
Or maybe it's already a myth - that WordPress is not good for a social network?
What engines are now sharpened specifically for the social network?
I myself used only WordPress, but I didn’t see any obvious cons Well, if only that the set of its functions is large and something, let’s say, I don’t need

Answer 1

put the forum plugin on vp and vbulletin separately. Go to the admin panel and see the difference.