Nobody at the beginning of the industrial revolution could have imagined the types of post-revolution jobs we have now. So "tell me what job to get then" is the wrong mindset.

Will I need to go to college for a few years to get this theoretical new job? Will my health insurance be covered if I do? As ever, I'm glad I never wanted children because just keeping my own ass sheltered, fed, and well(ish) is hard enough.

Maybe? Probably?

It sounds like your problem is less with your specific job being obsoleted (or made less lucrative to you) by AI and more with just having to work in the first place. I can't really help with that.

Well, I do have a crippling illness that results in some disability, so being able to work (and especially to keep my health insurance) is indeed a significant concern of mine.

>I don't really feel like asking people if they want fries with their burger.

McDonalds and others have kiosks already. One place I frequent only has touch screens for ordering.