yeah this is nonsense. It's like complaining about Obama's brown suit, which obviously was never a disrespectful thing to do, anywhere ever. complete made up horseshit by republican snowflakes. There is a sliver of an argument to make that you should indeed be wearing black to a funeral, but it really isn't hard and fast these days, and at this sort of thing you go with the person's culture with what is appropriate.
this also doesn't rise anywhere near the level of MAGA snowflakes complaining about a real leader and an actual man like Zelensky walking all over Trump and JD eyeliner while wearing fatigues in their presence. Don't be little MAGA bitches by complaining about Trump's blue suit.