Yes, it maybe there, but no, It's only a problem if people make it one. It's not there by default and unavoidable.

> I don't think the current trend of perceiving any unwanted sexual interest as inherently bad is at all healthy for society.

That's a pretty hostile view.

> P.S: i know and remember a lot of my friends who found their S.O. through facebook so it being alive arguanly disproves the assumption behind

There is a difference between making friends and eventually hooking up with one/some of them, and going out to make victims on purpose.

In the first place it means they knew about a problem, and searched for ways to solve it. It does not mean they wanted to enforce it and spread it. Relationship status is a big hint there.

Yes, there is nothing wrong with annoying people who want to be annoyed. But ignorantly bothering anyone just because you can is harmful.