Airline policy is airline policy. I don't know if the airlines let customers know "the dress code". What's amazing is the same mfers whining about airline mask policy and view that as tyranny... are ok with the airline dress code and don't view that as tyranny. whats worse seeing human flesh or giving someone a disease that can kill or significantly alter their long term health?
Any way, as far as her saying hey I was treated this way because I was a mixed raced over weight woman, well the question becomes are different races treated differently in America? Yes, Are over weight people treated differently in America? Yes. Are women treated differently in America? Yes. So who knows the specifics of her incident, but is it plausible she was treated differently based on those traits? Yes it is plausible.