For the existing folks, almost certainly, but it prevents the spread of misinformation; and more importantly, it prevents the _repetitive reinforcement_ of misinformation.
Maybe for that one platform on this one issue. It wouldn't prevent the major networks from repeatedly spreading misinformation, nor on unidentified issues. I remember for years the major networks were stating that the gender wage gap was the difference between a man and a woman in the same job with all else being equal. Yet the BLS study they were getting the numbers from show a fundamentally different issue.
YouTube can censor whatever and however they want. I just don't see this as making much of an impact either way.
