I reckon the whole Chick/DIK mechanism is way over analysed. It’s just a slight attitude adjustment, but deep down the mc is a nice caring guy no matter what.
He steps up into the alpha role at the DIKs regardless of Chick/DIK affinity. And he can have a lot of sex and drink a lot too regardless.
That’s fine. You don’t have to be a haughty cunt to enjoy an active sex life, and once you’ve already had too much to drink, it’s quite easy to keep drinking more (until your body rejects it

).
Ultimately the Chick/DIK scale controls his attitude (polite or rough around the edges) and it steers him towards/away certain love interests (Jill, M&J, Quinn etc).
To expect a lot more from it that that is probably to expect too much. It’s just a fun college sex romp.
It’s a lot of fun, and has enough twists and turns to keep us thinking, but to take it more seriously than that is to probably forget the games prime objective.
Low brow entertainment.