My heart sinks when we arrive on a bussing stand in a hot destination only to see the outbound pax already sitting on a bus waiting.
From the point of view of a passenger, it's nice to know that the 2 people in the pointy end realises SLF are humans rather than animals being sent to an abattoir.
As someone who gets paid to sit in the pointy end, why do you personally really care if there's a bunch of punters stuck in a hot bus in summer or waiting in an outdoor cage while snow is falling mid-winter ? Means at the very least that you get to fly again quickly with a much lower risk of hanging around waiting for a new slot to be granted. The less time an aircraft spends on the ground, the earlier you get to go home without spending time at work unpaid. Ultimately as long as there is nothing like killing children to sacrifice their blood to the OTP deity going on, what the handling agent does is not the problem of the people who do the flying.
If there's a delay to a flight, it's a very simple matter of just reading a generic series of lines "Terribly sorry for the delay but we had a problem with some paperwork" - passengers won't have a clue as to what's really behind the delay and you can take it off your list of things to worry about.
</Cynic mode=off>