I like this idea, too. Maintaining a reading list of personal sites you find valuable or interesting (and especially discovering new and interesting/relevant content from sites you currently follow, rather than from a search engine or social media site) has a very 90s feel to me.
You have to wonder why he even felt the need to make this. I mean isn't it enough to have an idea in your head about who your favourite people are? No, I think he is saying 'hey this can be your echo chamber too'. It's like he's trying to make his chamber more echoey by boosting all the people who think almost identically to him, to a group of people on the internet who also think identically to him.
I may tweak the idea by adding "tags" to each name, though.