It definitely was a thing for a long time. When I first started here in the mid 20teens, it was practiced and enforced. A few years later pilots especially started saying eff this and not doing it. Now it is in the employee travel manual, but it says should when possible, which to me means completely optional. I have wasted enough of my life waiting for people to get off of airplanes.
Of course now it doesn't matter anyway. We are going to be in 24B and like it.