That statement is ridiculous to me - actually more ridiculous than I find the whole "influencer" culture in the first place.
"Influencer" absolutely is a real thing. The reason brands are willing to pay many thousands of dollars to get something as simple as a tweet, story or post about a product is quite simply because it works. On the other side, Snapchat lost $1.3 billion in valuation when Kylie Jenner tweeted "sooo does anyone else not open Snapchat anymore? Or is it just me... ugh this is so sad." Seems like "influencer" very accurately describes the role.