> On the surface, "don't be nice" appears pretty douchey.
Very true, but I think the broader point is to avoid being the stereotypical "nice guy" towards women. For better or worse, being "overly nice" or eager to please is a low-confidence move, something that does not appear to be valued by many women.
Random thought: In dating terms, "nice guy" seems to equal "doesn't push for sex" and "bad boy" seems to be "is definitely looking for sex". I am wondering if what is intended by "don't be nice" is along the lines of "be up front about the fact that you are interested in sex".
Up front, but do not bother them with more attempts after getting a clear no. Put her into the friend-zone pro-actively, if you like her enough to hang out, or ignore her, if you are not actually interested in non-romantic activities. But move on.
Very true, but I think the broader point is to avoid being the stereotypical "nice guy" towards women. For better or worse, being "overly nice" or eager to please is a low-confidence move, something that does not appear to be valued by many women.