Bullshit jobs are jobs that are not productive at all, or are sometimes actively destructive (in adding layers of bureaucracy) in ways that require other essentially bullshit jobs to counteract.
You're talking about something a bit more abstract and puritan. I was a 3602 Clerk, once, which was an essentially bullshit job created to navigate the hurdles presented by a post office clerk assigned to my company, whose skills primarily consisted of sleeping while sitting up, and storing the 12 lbs. of paperwork I generated per mailing in a closet and taking my word for its veracity. That's a bullshit job. I once worked for an agency whose primary job was procuring people willing to, for money, give permission to other people to declare evidence for a quality assigned by governing officials that obligated higher governing officials to give money to the customers of the clients for whom we procured, and whom we sought out to make a living. We were honestly just a conduit for government money that grabbed 3% of the cash that flowed through it. That's an entire bullshit agency.
A comedian creates laughs. That's not a bullshit job, that's a good job.