I have to ask, did you call the emergency line or the non-emergency line? Because if you called 911, I can completely understand them getting on your case about it not being an emergency, because it wasn't.
I think that part of their job is resolving violent or potentially violent conflict.
It’s true that perhaps my situation as described to the dispatcher might not have met a certain threshold, however, it would’ve made sense for them to ask more questions and give guidance as in general people have a bit of adrenaline when calling and might not be in the best shape to give a clear description. Immediately dismissing such scenarios could lead to some harmful results.
That's an interesting interpretation. They also said that "they were damaging cars" and "they became aggressive".
You should reread the comment, this wasn't actually said.