I say this for emphasis, not to personally attack you: Whenever I read or hear this it makes me extremely suspicious, because it often doesn't come from those who will do the sacrifice themselves.
Censorship and other forms of regulating free speech is simply never a good solution. Perpetrators of lies will even hide behind this, and create a false image of rebellious heroism, instead of facing public discourse and the consequences thereof.
YouTube is a private entity but they correctly assess that they have a significant responsibility here. But curating social media content is not unheard of, Wikipedia manages it surprisingly well. Instead they could for example certify and emphasize content that is grounded in science and verify content creators of such. This is from the top of my head but there are certainly other people who have smarter ideas that don't involve straight up censorship.
Talk is talk. Actions should have consequences, which is why we have rules and agreements in the real world. I also very much doubt that censorship achieves what it is supposed to. People don't suddenly become enlightened (depending on context it might be the other way around) when you ban that stuff. It can easily become worse.