Gary Vaynerchuk has been an internet celebrity for so long that it’s hard to know which era’s terminology to use to describe him. He was among YouTube’s earliest stars, crafting videos first for his father’s wine business and then about media and technology companies; later he started his own media company. He has been a self-help guru, publishing books about how fans could “Crush It” in their own businesses, and also something more extreme, adopting an almost televangelist-like persona as “Gary Vee.” Most recently, nonfungible tokens, or NFTs, have turned out to be a natural fit for him: He re-entered the zeitgeist last year with his own NFT projects, exhorting his young audience to join the club lest they end up among the “losers” he spends so much time denouncing. But something interesting popped up in response: videos of young adults looking plaintively into their own cameras and explaining why they considered Vaynerchuk’s content dangerous. A man named Nick Green, curly-haired and...