A normal person would have some empathy for people locked in/out their rooms and held ransom. It could be especially dangerous if any of them have medical conditions. I doubt it was a laughing matter for them at the time. The only thing laughable is that hotel's security and setup,
It would take them a while to get to every guest, and it would require them to break the doors. Not exactly a small inconvenience and likely to ruin many vacations.