I haven't heard anything about the pilot strike mentioned in the article. That aside, I have the following to say which is oriented more towards flight attendants than the pilots whom you don't normally interact with. Of any airline I have ever traveled on, the Virgin lines (Atlantic and America), have been my favorite. This ranges from the very basic things like more leg room than their competitors to wifi in the sk…
They heard you were there because the gate agent went aboard and told them (nicely, I am sure) to get off the plane.
Employees flying standby are always at the mercy of late arriving paying passengers.
And, sure they had no compunction about getting off because
1) they were told to
2) employees are keenly aware that grousing in front of the customers is a Bad Idea.
I'm sure they were actually in good spirits about it: flying non-rev you know you can be bumped and after all it's in favor of people paying your salary.