On social media, most everything is fake, even the followers:

The company, which didn’t get its expected sales boost, sent an anonymous survey to their influencers, asking if they had ever paid for followers, likes or comments. Nearly two-thirds of respondents said yes, Mr. Ankarlid, the CEO, said.

HypeAuditor, an analytics firm, investigated 1.84 million Instagram accounts and found more than half used fraud to inflate the number of followers.

Source: Online Influencers Tell You What to Buy, Advertisers Wonder Who’s Listening – WSJ