I wonder if online dating tends to lead to similar impacts to mental health for some groups of people as social media does to teen girls. Just like in Haidt's examples, it's impersonal, phone-based, leading to constant social comparison, feelings of rejection, ostracism and ghosting. I wouldn't be shocked if a few years from now research came out showing that it has similar effects to adults, but they're just better…
Anecdotal, but dating apps sure helped crush the self-esteem of my sister. She still gets on them occasionally, because there's no alternative now. Guys in the post-#metoo era just won't approach a girl at a bar the way they used to.
Approaching girls in public has high social consequences. I've read enough reddit [0][1][2] or seen enough news articles about people banned from businesses because a guy was seen as creepy.
Men need to learn what is ok and not ok when communicating with women. This is already an challenge because what is ok with one woman is not ok with another. Add in the shifting society view of what is appropriate turns it into an impossible task.
It just seems safer to do nothing and wait for the girl to make the first move.