I think Graeber misses the mark quite substantially, in that I think to the extent that BS jobs exist, they are rarely perceived as such by the people who are doing them (in fact, the data suggests the opposite correlation: people doing important but 'shit' jobs are more likely to report that their work is bullshit than people doing work that Graeber would view as 'bullshit', like management consulting and marketing).
Possibly, I mean in the book there's a hard number survey that says 37% of their sample described their job as not making a meaningful difference. It's a great book.