I don't quite get the connection between the premise and the conclusion. Sure, influencers get rewarded by social media algorithms for polarising content, but most people are not influencers.
what kind of world is this author living in where their social circle includes so many influencers that are cashing in on social media?
You also might be putting too fine a point on "influencer". A relative of mine on Facebook might be a kind of "influencer"—at least with regard to his small cadre of family and friends that follow him.
Perhaps, but many are. They just don't have much reach or don't use a digital platform.
they either get elected or appointment to the government