Fair enough. Here's where I'm coming from:

• OP's title, which implies that people who enjoy clubs are "other" and "different" to such an extent as to be totally beyond OP's comprehension.

• Your comment that "people act like idiots at night clubs." I'll admit, SOME people do act like total assholes without a half brain between the entire group. However, from my own flawed experiences it seems like the majority of people at clubs are just out to have a few drinks and dance with their friends. It is unfair to call them idiots because they enjoy something you do not.

• The actual comic consists of a lone, brightly lit "hero" scowling in the middle. He looks fairly normal, is decently dressed, and seems pretty relate-able. On the other hand, you have beside him the grotesquely painted archetypal "whores" who are vainly taking idiotic pictures of themselves in the "duckface" pose, a pose that is hated by nearly all of reddit. This is a very intentional contrast. Farther back, you have a crowd of faceless forms painted in uninteresting shades of grey. So, yes, I would say the author of the comic is making generalizations that every person in the club is either a superficial bimbo or a faceless drone who is only there because it's the "cool" thing to do.

TL;DR: WAY over-analyzing in response to a challenge!