Oh please. There are thousands of people who are eligible to nominate. And these eligible nominators can nominate anyone they like. The fact that 3 or 4 of these thousands of people have nominated Mr. Trump means basically nothing. All it proves is that there are 3 or 4 eligible nominators who are not "firing on all cylinders" - no big surprise. I can pretty much guarantee that if we find out more about these nominators, they will each turn out to be nuttier than a fruitcake.
In any event, I suspect that if you are President of the most powerful nation on earth, you stand a pretty good change of getting many nominations. Unless you start a war. And for all his abject idiocy, we must give credit where credit is due: Mr. Trump has not (yet, anyway) started a war.