It's a post from 2012, when Snapchat started blowing up in the mainstream. The main point is that public social networks make people show off, instead of bonding on a deeper level. So we need more personal, less permanent social networks so we can better connect.
I see another side to this. Social networks have only been around for a few years, so we're still figuring out how to use them. Twitter didn't make sense to anybody initially either, now it does. Our use of those sites becomes more nuanced, and maybe now we're at a point where we actually want to have those deeper connections online, while before we didn't see a need for it. So the question is whether the tech drives behavior, or vice versa.