I don't think spreading misinformation about vaccines is in anyway comparable to the examples of hollywood or the moon landing, and I do in fact think it's a perfect fit for the analogy:

It is an indisputable fact that there are people dying every day because they have decided not to take a vaccine based on misinformation. That group of people is also causing the deaths of others by overwhelming the emergency facilities of hospitals. Personally, I would argue that this danger is very much clear and present.