You skipped the points where the aforementioned "superhero" is looking down on others and questioning their abilities to work on the same project.
If people want to essentially live at work, cool, they just shouldn't expect others to do so as well which is inevitably the problem. Critiquing someone's control issues and negative attitude (following the framing of the original post) does not make a person(s) ungrateful.
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You skipped the points where the aforementioned "superhero" is looking down on others and questioning their abilities to work on the same project.
If people want to essentially live at work, cool, they just shouldn't expect others to do so as well which is inevitably the problem. Critiquing someone's control issues and negative attitude (following the framing of the original post) does not make a person(s) ungrateful.