Much of what we do falls into the pointless jobs category too. We write software to help people automate things that don't need to be done in the first place. Almost every piece of software we write has been written before, and will be written again tomorrow on a slightly different platform for a slightly different audience. What percentage of software development is totally redundant? 90%? More? What percentage of the work we do has "clear, undeniable social value" as Graeber puts it?
When you take a step back and reflect on what we do day-to-day it seems so utterly bizarre.