I was thinking the same thing. If I wanted to initiate interaction with a woman, I would wait until she took a break and ask her a question about a workout technique. Also, asking a question about workout routines would create a more positive interaction than criticizing her clothing.

" I do have seen women waiting "casually" at places where they could be seen by the men they like so when he stops, he can chat."

That is how the mating game works. A man will generally initiate an interaction when he wants to connect with a woman. A woman will generally demonstrate with looks and postures towards a man who she wishes to attract. An observant man can identify a woman trying to get his attention.

I get the impression that there are many rude people working out at gyms. You seem to encounter more than your share of them.