Public meetings are performance art. Town halls, hearings, Q&As, etc. Good ones are scripted, controlled.
All the discovery, negotiation happens beforehand. The testimony and whatever votes occur are kabuki.
As a citizen with a little bit of experience, I now enthusiastically support how the game works. How else could it work? I've seen what happens when yahoos or saboteurs are allowed to take the dialog off script.
As an activist, I was once allowed to speak unscripted. The body suspended the rules to allow my testimony. What harm could be done? I revealed evidence that spiked the appropriation under consideration. (Vendor receiving the contract was actually out of business.) Whoops! Made the local news.
Neither side made that mistake again.
I now have a much greater appreciation for lobbying, engaging sympathetic representatives (or more likely, their staff) face-to-face, long before any decisions are made.
I'm by no means an expert in these things. So don't base your actions on my experiences.
FWIW, A similar exchange, Feynman's revelation about the O-rings failing leading to the lose of the Challenger and it's crew, is related in Surely You Must Be Joking, Mr Feynman.