I dunno why you're bringing lesbians into this. My point with feminism is that feminism is about treating women with with respect, and not expecting them to do thing, nor critizing their appearance all the time (too fat, too skinny, not enough make up, etc.) This could explain why some women do not like online dating.
Is this any worse in online dating than in real life dating?
If anything, women seem to benefit from sexism in online dating - they take advantage of the fact that men are expected to initiate by rarely doing so themselves. It's much easier and faster to sit back and read personalized messages than to write them.