As I'd commented a few times and the hashtag should have made clear, this poll is about the "Marketplace of Ideas" concept, which in one interpretation seems to suggest that if you've got a contentious discussion, the apparently obvious solution is to expand it without limit.
(Other interpretations exist, including that arbitrarily limiting who can discuss a topic at all might be discriminatory, but the question as posed captures a flavour frequently encountered.)
On reflection, the notion does appear rather rediculous. I'd suggest that more contentious questions needs more structured, rather than less structured, discussion. Often with specific expertise or qualifications.
On the internet, everyone knows you're a cat — and that's totally okay.