In my view this is a tricky issue. I agree that anti vaxxers are a bad trend. But I think to some degree the medical establishment has brought this onto themselves. I remember when things like yoga and meditation came up a lot of doctors just brushed it off as total nonsense. It took a long time for them to catch up. Same for the microbiome. A lot of traditional medicine for a long time has claimed a connection between gut health and general health which most doctors also rejected. Only recently the idea gets some acceptance.

If I had a serious disease I would probably also look into alternative treatments (In Addition to the usual options) because I think most doctors have a very narrow view on things. What bugs me for example is the focus on fixing things vs preventing. Doctors should put much more effort into to promoting healthy lifestyles than they do now.

In short: I am not surprised that people are skeptical of the usual medical advice. Unfortunately some people take this way too far as the anti vaxxers show.