You ... might be the out-of-touch one here. This culture is pretty common all over the country these days (although definitely most prevalent in the big metro areas).
How could they be meaningless? They have clear meanings. Maybe you mean that you are choosing to disbelieve them? Then that's your problem. They're self-evidently true if you live in these places.
What? Subjective claims still support an argument, just more loosely than objective ones do. Instead of saying my observations are wrong or that you disagree with them, your stance is that "opinions aren't real"? That's absurd.
The kind of worldview being promoted here tends to have people that prefer to enforce their worldview by the sword rather than in the chamber of ideals and free thought.