No, it was that in his position as the leader of one of the greatest super powers on the planet, him suggesting that it was interesting idea about using disinfectant internaly to 'clean' people was something worth looking at, is more than enough for people who follow him to try that sort of thing just because he said that. Which they did because the number of people being accidentally poisoned by disinfectant ingestion went up a lot in the few weeks after he said it.
You then suggested that because he said it, it suggests that it would have been talked about before hand by scientists and doctors. I dissagreed and likened it to him talking about Springfield pets, as him talking about that subject, by your logic, would mean that scientists (or some advisors with knowlege of the act) would have had to have been talking about pet eating behind the scenes for Trump to even entertain talking about it on live TV.