What if we happen to approximate or brute force AGI and it will be just around the corner in 2 weeks every 2 weeks, so companies start creating jobs like "ai training data generator", where you do mundane things forever, always, otherwise you starve. I think this will be the end and it ends with the bullshittiest of bullshit jobs, because everything else has been 80% replaced by AI/robots.

Or what if we are actually in a simulation right now that produces such data for an ai we cannot grasp the scale of?

"AI training data generator" already exists and is absorbing some of the unemployment in the last couple waves of CS and writing grads. So far it's generally Uber-style independent contractor no benefits gig work, pays noticeably less than any kind of professional software development, and the various metrics involved require so much focus when you are working that it's much more intensive per hour than most proper dev jobs.