From the wiki article you cited:

Two studies found that Graeber's claims are not supported by data: while he claims that 50% of jobs are useless, less than 20% of workers feel that way, and those who feel their jobs are useless do not correlate with whether their job is useless. (Garbage collectors, janitors, and other essential workers more often felt like their jobs were useless than people in jobs classified by Graeber as useless.) The studies found that toxic work culture and bad management were better explanations of the reasons for those feelings (as described in Marx's theory of alienation). The studies did find that the belief that one's work is useless led to lower personal wellbeing.

The reality is, almost no jobs are actually bullshit. After all, whether you are a giant corporation or a homeowner paying for a plumber to fix their toilet, no one wants to pay someone money to do nothing useful. Of course, there is slack in the system and sometimes you'll end up in a sort of sisyphean job. But most jobs exist because someone, somewhere needs or wants something done. And most of the needs and wants of the world, ultimately, come from normal people.

Of course, it is easy to make the argument that what people want is wrong. They could live in smaller houses, ride bikes instead of cars, not eat meat, and stop buying fancy watches.They could repair things instead if throwing them out, learn to be happy living in their neighborhoods rather than travelling around the world, and have fun by spending time with friends instead of going to music festivals.

But the fact is "we are going to solve malaria in Malawi by ending Bonaroo, steak, and shopping malls" is not a line that will play well with... like... anyone.