You can reject my experience all you want but the reality is that between 2020 and 2023ish the world’s top social media platforms became less open about specific kinds of information and actively tried to censor and suppress any contrary information to a government opinion/narrative about certain subjects. During this time certain forms of extremism exploded in popularity as people were driven to information silos to find and learn about the information that the social media platforms were trying to suppress. Those silos generally didn’t have censorship but they also didn’t have contrarian voices either. So when folks landed in those silos all they heard was the assholes at the loud volumes and without the contrarians, followed those assholes.

Specifically to vaccines, the antivax crowd was pretty minimal to a some nutjob soccer moms, holistic medicine fanatics, and RFKjr until you stopped having conversations with them, because you folks who want or believe that censorship is good silenced the debate and did not follow them to the forums where they went to spread their ideas to continue the debate.

I am absolutely convinced that the growth in the antivax movement is directly tied to the censorship effort (and the desire of the government to not be completely honest about the vaccines at the time).