President Trump could have just as easily advocated taking vitamin C to help ward off Covid19.
If he had, we would have been inundated with the same kinds of dire warnings about the potential dangers of taking vitamin C. There would be reports of people supposedly dying from it. We would be hearing how reckless it is for the President (not a doctor!) to be giving medical advice.
This whole “controversy” is stupid.
But he didn't advocate anything - he just said HE was taking it - didn't tell anyone else to take it.