SO never quite the original vision right. (A strange thing to say about an incredibly successful site, but...)
The problem is that you can't boil down development to very focussed questions with very focussed answers.
A lot of answers are experience and opinion - and if someone experienced is giving an opinion that's usually useful in itself, dammit, even if someone else with experience disagrees.
'Is React better than Angular?' may seem pointlessly open, but if you get answers from two camps who both know what they're talking about, it's possible to learn a lot from both.