Good on the crew.
I would like to think that I too would have turned around and walked off refusing to carry this rabble.
Who the hell do they think they are?
When they (the pax) inevitably turned up (eventually) for their business meeting did their peers, colleagues or clients boo them?
Did their spouse's / kids abuse them?
I don't admire their behaviour, but if you think aircrew are the only people who ever get abuse at work for things that aren't their fault, you're deluded.
So yes, I bet some of them did get abuse from clients, bosses and perhaps even family. That's what life is like. If we all just downed-tools and walked out whenever some client or boss got arsey, the world would grind to a halt. It doesn't make it right, but it happens to everybody.