If you stick with the comparison they were making to cinema this is like saying a movie star is not countercultural and you'd be right. The influencers with millions of followers are not countercultural, they've broken into the mainstream and are busily selling out for money and fame. At the same time you can have countercultural activities happening on those platforms and the "true" revolutionaries will actively eschew money from sponsors and ads and will sabotage any mainstream attempts to make them famous by trolling the normies that jump on the band wagon or by intentionally poisoning their content with things that go far beyond the pale.