Its completely idiotic. And you know it. The stats kept on people having problems from vitamins is near zero, every year. More people have issues with doctor prescribed meds harming them, even with being taken as directed. As well as taking otc meds like aspirin or tylenol or advil.
Health problems from overtaking vitamins in comparison are essentially non existent, year after year.
I agree that meds, prescribed and OTC, cause many more problems than vitamins and supplements, but the problem does exist. Some people taking massive doses of certain B vitamins, for example, can develop nerve and muscular pain among other things.
Another example:
https://www.webmd.com/lung-cancer/news/20170822/do-common-vitamins-raise-lung-cancer-risk