The honesty of a man saying, “What the hell was that?” when a woman is trying to do what society expects her to do to be sexy is a pretty clear indication of how our raunch culture makes fools out of women who try to fit into it.
If Reiner had loved it, I think I would have found that scene incredibly Problematic From a Feminist Perspective™. But he didn’t. This otherwise misogynistic character was baffled and troubled by this kind of display.