Earlier quoted context omitted.
Tolerance is largely relative I think. You could have a crank that spits out pennies so long as you crank it. Invariably we will tire of turning the crank because it's monotonous uninspiring unfulfilling work. The argument could be made that someone somewhere does not have the opportunity to so easily spin a crank for money so we ought to be grateful, but the mind's adaptability is a double edged sword. You exalt the…
At the same time crank turning is a job where you need to do little else than show up, freeing your mind to think about things other than work.
Is the crank well-maintained, or is it continually catching, grinding, or breaking down?
Are you rewarded for turning the crank more and provided with high-quality feedback about that reward, or is there merely an unceasing open-loop demand that you turn the crank "as fast as possible"?
Do you know the function of the crank and see value in it, or is it an opaque component of an inscrutable black box?
I'll bet one set of answers leads to a lot more burnout than the other.