People are much better than saying what they don’t like than what they do.
That's because good design is very hard to identify, while almost everyone can immediately identify a bad design.
What if there’s many more POCs they don’t like than those they do?
Theyre also inclined to jump into talking about solutions rather than their actual problem which inhibits analysis of the problem.
Using the "let run multiple agents run amok" approach you surely get a lot of "i don't like that part"-feature requests, yes.
In my opinion, a good engineer is not good because he understands every single obscure technical detail, but because he can build solutions that the people using his technology actually want. The list of things they don't want on the other hand is endless.