unpopular? i would counter that anyone who understands technology and doesn't consider it to be inherently slightly evil, probably doesn't believe that evil exists, at least in the traditional sense.
"Rudolf Steiner believed that illnesses have their meaning in karmic events. Fever, for example, could help children to settle into their bodies. Those who had done things wrong in previous lives might have to make up for them through illness - and those who inoculate themselves could become deaf to the karmic message."
With people that say I don't need vaccines I have a immune system.
- R. Steiner, 27 October 1917
Safe and EFFECTIVE!
Let's put it this way, yes, people try to audit out cancer and there is an antivax cohort (this is more about external control, distrust of authority outside of Scientology, causing autism, your usual suspects), but it's not necessarily against modern medicine in most ways (obviously a carve out for all things psychiatric). Once that cancer gets into oh shit territory, they are on chemo, and often times too late, but that's a different discussion.