Because there is no appreciable difference between outputs. Most of the work that most of us do isn't important. It's busywork byproducts of making widgets that most people don't even need. So if your job is already pointless why not make it easier using LLMs?
Sounds a little sad. I think I’d rather find another job.
Sure, but I'd also rather have so much money I never needed to work for money again and could just do whatever I actually enjoyed all of the time. Back in reality, lots of people work because they have to, and choosing a job is a balance between what they'd rather do and what actually is available for them to be able to afford food and a place to live.
So very many of us are underemployed and do meaningless work. IMO these jobs exist to prevent societal upheaval aka revolt