Yep, I totally agree, which is why I avoid Discord as much as possible. Forums worked because they weren't chat rooms, and making a hybrid basically brings all of the problems of a chatroom into a forum system which adds almost no benefit, but a huge amount of problems.
Not every group uses Discord exclusively, and some still have forums, thankfully. Also, there's also Reddit, which is basically the closest thing I've found to a "universal" forum protocol, although it too has its share of issues.