In the Preface, the earlier inspiration for what's a "Bullshit Job":
> Everyone is familiar with those sort of jobs that don’t seem, to the outsider, to really do much of anything...
> This possibility that our society is riddled with useless jobs that no one wants to talk about did not seem inherently implausible.
> Clearly, then, we have an important social phenomenon that has received almost no systematic attention.
There's also a Chapter titled: "Why Do We as a Society Not Object to the Growth of Pointless Employment?"
It seems Graeber is making a much wider commentary, including society's perspective, which goes beyond the personal opinions of the people holding these jobs.