I think Park Soo-hong is actually the decent one.

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Of course, he was definitely in the wrong O
If the child was crying so hard that they even considered getting off the plane, it must have been a really serious crying fit
And since he apologized cleanly... well
But the cases that are even worse than that are when people check in and drop off their luggage,
then show up late to the boarding gate, making it impossible for the plane to depart
(The reason isn't just that they're late, but that the luggage has to be removed before departure)
The ones who are the most infuriating are the ones who exploit this to go do duty-free shopping
or those who take their sweet time eating in the lounge and then crawl to the gate late X