Oh hmm, no, that's not my point. My point is that unless the study also looked into what the people with fewer hours then did with the now-free hours, we all have insufficient information with which to make a good/bad judgement call on it.
I don't follow your utilitarian math. Can you rephrase?
> that the employee gets the value rather than the rest of society.
I don't think drawing this line is reasonable. The employee is part of society, trying to reason from a starting point of separating them from it just seems silly.
As far as I understand your argument, I definitely do not agree that it's a broken window fallacy. In your view, what is the broken window in this case?
(Not the fallacy, the thing that would be the literal broken window).