I can't help but wonder how many of the presenters actually believe what they are pushing and how many are just conning vulnerable people.
It's sad. There are a lot of things that we simply don't know about the body and disease. (E.g. Alzheimer's, Autism, Fibromyalgia, Chronic Fatigue, etc...)
Humans don't like that. We don't like being told "We simply don't know why." So a conspiracy is easier to accept.
(Ironically, how vaccines work is one of the things we understand very well.)
The long term effects of this movement concern me about the implications for herd immunity. I really don't want to live in a world where Polio and Measles are killers once more.