[F-0X]

I don't think it does. People share information and learn from each other. Hence, it is important to be responsible when providing information. We frequently see disclaimers on HN, Reddit, etc. like "IANAL", so as to put forward a point of view while warning it shouldn't be taken too seriously as actionable advice. It's the sensible thing to do.

Anybody spreading anti-vaccination propaganda has been convinced of it themselves.