They appear to be middle-level freelancers, where convincing your clients that you are really smart and making a lot of noise in social media is more important

They appear to be middle-level freelancers, where convincing your clients that you are really smart and making a lot of noise in social media is more important than actually being really smart. (I am also a freelancer, so i'm not trying to be snarky so much as point out the incentives, the article is clearly not meant for HN)