[toothbrush]

> Logically, this implies that he was asking women who were seeking attraction by dressing attractively and presenting themselves as available and seeking mates, just like birds who sing to signal their availability.

Hm, the male gaze is heavy with this one. Has it ever occurred to you that people (of whatever gender) might like to put on clothes to please themselves? Because it makes them feel nice? Your assumption that the only possible reason to do that could be to "show availability" and that it was done with other people, and their regard, in mind, is awfully egocentric of you.

Incidentally, i agree with your thesis that attractiveness isn't a have/have not thing, nor is it about normative tastes with regards to appearance. This is, however, orthogonal to whether or not women exist simply to mate with, and that they signal this by clothing choices (which is what you're implying, by denying that anyone would dress a certain way for other reasons).