I guess everywhere is different, but in my experience this isn't even close to being true which makes it rather unfunny. I worked at an international airport for many years and the security staff were some of the nicest people there. Never had an issue with security at any of the airports I've passed through, either. This sketch just gives off classist vibes, to be honest.

Wow they've aged so much

If that's the best they have to offer...

I have tons of respect for these guys, imo they were the closest we ever got to worthy heirs of Monty Python. But over the years they did too much shitty stuff, too.