Just happened to me!
I am flying Pit to Clt with a COMPLETELY EMPTY ROLLABOARD….yes, not one thing in it…. Flight attendant said I couldn’t bring it on board….I squished it to basically flat and she said no….PSA flight (American). Such ........… I have a quick connection and now I will be fu****. They will get what they deserve when I get my survey….. funny thing is they let another person on with one…. Won’t elaborate here…. But I will say reverse discrimination is loud and clear here!