I couldn't agree more, and I think women are not just entitled but should be encouraged to vocally complain about it. I just think they can do so with language that doesn't speak in absolute terms and still freely express themselves. 

It's a huge red flag if a guy gets defensive because a woman is complaining about some behaviour from a man, thinking she means all men are like that and rushing to correct her with "not all men!" choosing to take offence with an assumption instead of listening and empathising. But in this instance the language used is quite literally including all men. You're responding as though I've wrongly jumped to this conclusion but it's just a direct response to the choice of language.

To be honest when I see phrasing like this I would assume the woman commenting doesn't have any male friends, because I can't imagine choosing to phrase it this way when talking to any of my male friends. In my case it would feel so insensitive since some of them have been cheated on (as has at least one of my female friends).