I see the reasoning, but I don't think it's necessarily true. Look at someone like Joe Rogan, who has millions of followers but a fairly eclectic mix of content

I see the reasoning, but I don't think it's necessarily true. Look at someone like Joe Rogan, who has millions of followers but a fairly eclectic mix of content and no one thing that defines what he does (interviewer, commentator, hiker, traveler, hunter, MMA enthusiast, fitness and "nutrition" advocate, etc). Come to think of it, most of the famous people I follow post random content as well, like musician Ola Englund posting funny videos of his kids or UFC fighter Derrick Lewis posting almost nothing UFC or fighting related. If anything, the unexpected content makes a person MORE worth following because it's not just generic self-promotion the whole time. It's a mixed bag, and the author definitely has some warrant for concern, but I think it's overblown.