> Brainstorming in a meeting is by far the least effective way. It just comes down to the most brazen flaunting their unnuanced opinions in rapid fire while more considerate and intricate reasoning is speed ran and drowned out by loud advocacy.

To fix that, the moderator needs to do what I would call "round-robin brainstorming". Each other participant has to have made exactly one point (in seating order or spontaneously) before the first one can make another one. Everyone has to weigh in, and at least for the first 2 or 3 rounds, the moderator needs to enforce this. Usually by then, everyone has warmed up to the idea that their ideas are not that stupid after all, and participation is more equalized.

Edit: about your other points: yes, I agree.