You think most of the accusations of him being racist are over that and you want to accuse me of being buried under a rock? Let s look back
I have a simple counter-argument: He's been the President the last four years. Everyone with even small amounts of attention given to politics can't get away from him being called racist over the last four years.
In terms of serious
incidents, I'd expect not, but in terms of the actual
accusations, the over-95%-negative news coverage of him has combed over every miniscule detail of his Presidency to take every
word as badly as possible. He makes it easy enough, but people are rather tired of the
continuous calls of "racist". We have twenty million obsessed activists screaming every day now, if not much, much more, but ultimately still an obnoxious minority.
I'm not even 21 yet. Every one of those cases you quoted happened before I was born. Only started paying some degree of attention to politics in 2016, and even then it was so shallow I missed the meltdown over Trump's election. Everyone under 30 is going to know Trump primarily for the Presidency, because his nastiness wasn't splattered across every outlet
every damn day until then. Rub people's faces in the petty shit too much and they won't take you seriously when you're talking about the big issues.
I don't see this stuff from before he ran for office being brought up with any frequency. Most people who call Trump racist, at least in terms of the signal rate, are saying it's because of his stance on immigration, or the "Muslim ban". People aren't talking about the shit he got up to in the 70s and 80s, or his contributions to the Birther nonsense. Not on any
serious scale. But immigration? Every damn day.