It's pretty obvious that @freeflight mean these jobs don't necessarily have to be shit.

They can be low / lower pay and still be a fairly reasonable place to work with fairly reasonable people to work with.

But, if we accept that work conditions fit some kind of natural distribution / bell curve, it's probably unrealistic to believe there will be no shit jobs.

He's saying that those jobs at McDonalds etc should be made easier on the employees.

I believe they're saying that we, as a society, could make some effort to make those jobs less soul-sucking.