Not wrong, but when others' mis- and ill-formed view of the world starts effecting others then some kind of action needs to happen:
* https://www.cdc.gov/measles/data-research/index.html
* https://www.cdc.gov/measles/about/history.html
* https://www.cbc.ca/news/health/canada-measles-outbreak-vacci...
* https://en.wikipedia.org/wiki/Vaccines_and_autism
* https://www.google.com/search?q=vaccine+autism