No idea why someone was upset with your taco post but I think I can possibly see where the FB banning comes from although it seems an overreaction. Lots of women correct others on things. If we are upset with one individual woman about something we don't blame all women. That would be labeled sexist. Lots of non-white people correct others on things. If we are upset with one particular non-white person about something we don't blame all non-white people. That would be labeled racist. It seems part of the culture nowadays that it is OK to openly attack white men but if FB wants to be consistent with their efforts to stop sexist and racist content the may feel they need to ban your type of comment especially from high-profile accounts.