There comes a point where you need to stop being kind. This doesn't mean you have to treat someone badly, but not everyone deserves your goodwill & time. If you are in this position please remember that you don't need to be kind to people that don't extend you the same courtesy.
listen. I think airlines should upgrade disabled passengers to first class when there are openings instead of more rich people who just want to sip their white wine early. for disabled folks, first class means more accessibility and less pain.