People are still going to be racist if Trump or Biden gets elected. I can’t believe you think that people aren’t going to be racist anymore just because the president is now different. Grow up, not everyone is going to like you or always be nice. Don’t support this restaurant if they’re assholes. Move on with life. I’m sorry to say but there isn’t a magical fix-all to racism, Racism existed before Trump and it will exist after Trump. Racists exist and you just have to ignore their ignorance and move on. Linking this unrelated anecdote to Trump is just random since although I’m sure some racists support Trump it does not correlate since that hostess would have been ignorant and racist with or without a Republican president.
I don’t doubt that the hostess was rude to your husband, possibly because she is racist. That being said from a restaurant worker’s perspective, it is unlikely that she is the reason he was missing the burger upgrade. Unless the cook could somehow see your husband and was also racist or the host went to the back and told the cook to skip the brown guy’s extras and then somehow the cook agreed. Cooks move fast and they don’t intentionally leave stuff off burgers just to piss people off.