Virtually every statement in this post is wrong. There's plenty of consensus in scientific fields, that's the point of scientific work, building consensus by means of agreed upon methodology. The core of science isn't 'debate' whatever that means, but work within theoretic or empirical disciplines done by people trained in methods that have proven to produce results, i.e. 'scientists'. If there is disagreement, it needs to be justified and articulated in a way that meaningfully builds on the knowledge of the field in question. nobody in science pays attention to 'disagreement' from people who don't understand the body of knowledge they're disagreeing with.

Youtube commenters or video creators don't practice science, they commentate on science, and thus whatever banning happens there has exactly zero influence on the actual course of scientific work which is done by a small percentage of people educated enough to actually have anything to say of value and contribute to the actual body of knowledge that collectively is 'science'.

America as a nation is scientifically illiterate exactly because of the thing you're advocating, that every clown should have a voice simply because they can open their mouth and make noises.