I wrote about all this on support forum. To not repeat all here.

https://bbpress.org/forums/topic/a-list-of-must-things-in-the-core-or-featured-plugins/

Weak point is third party plugins taking very crucial functions for one forum script. And some developers have even not logged in, or wrote a comment on WP support forum, for 4-5 years. Many bbPress plugins were "one client project need", and later nobody is interrested in them.

I mean I dont decide how forum world is developing. If I had power I would probably as dictator forbid stupid Facebook.

It is as it is. Forum software develop in this direction, and bbPress is lagging very long behind.