I always try to be the last one to board. Several months ago, I once again couldn't keep my mouth shut when the son (early twenties) was literally blaming the gate attendant that it was everyone else's fault that him and his family couldn't get to the gate on time, including the airline! When the gate attendant told them that they were technically too late to board, and the teenage daughter told the attendant to lose the attitude, I opened my mouth. She eventually let them in as a courtesy, and I got a "I love you Papi" as the last guest through the gate. I get heated when people are rude to airline industry workers just trying to do their job.
Jerks are everywhere, they have international passports.