If you've ever had the "pleasure" of talking to incels and MRAs about penis size, you may have heard terms like "big dick privilege." I got to watch a dude once have a VERY public meltdown about how "women need to know it's okay for a man to have a small penis!" Exactly how public and how absurd this was is a long story, suffice it to say he made a bunch of people uncomfortable AND his dick was completely normal looking... BUT a surprising number of men in that crowd seemed to be sort of sympathetic to him.
I'm not saying this was ANOTHER dog whistle at ANOTHER of Trump's alt right constituencies, but it IS another example of most people being like "what a total buffoon!"
But MORE of a certain type people with a certain type of ideology then you would think MIGHT be reacting with a quiet "Wow, Trump really gets us!" while "normal" people are like "wow, he's going really senile."