Fair enough, in principle. However, I think the OP is saying that there is a difference in the nature and the quantity of the comments such that it crosses the

Fair enough, in principle. However, I think the OP is saying that there is a difference in the nature and the quantity of the comments such that it crosses the line from mild annoyance to something worse; it's so off-putting that it prevents the women in question from participating in online dating sites. And, since the women are an important component of dating sites, it's probably important to take that into consideration when designing such sites. If you're happy being a bit more stoical about the problems you've encountered, that's fine. Perhaps some of the women receiving unwanted messages on dating sites could be a bit more stoical too. But it does seem to me that they're being given a bit more to be stoical about, and this is unfair, to some extent (it is perhaps hardly the greatest injustice in the world, but it does seem genuinely unfair).