But where is the notable negative impact to those two people's lives? I ain't denying that he was being a goober to them, but "at their expense" implies its at

But where is the notable negative impact to those two people's lives? I ain't denying that he was being a goober to them, but "at their expense" implies its at their expense I don't see how it goes further than, them getting to the next worker at the airport, saying "UGH, your PR on twitter sucks!", and then being told "maam/sir, that is not our twitter account"