Glucose depending on performance of a task seems pretty obvious as does performance of a task being dependent on glucose levels; is there any reason to believe

Glucose depending on performance of a task seems pretty obvious as does performance of a task being dependent on glucose levels; is there any reason to believe that the tasks being rooted in self-control has any bearing on the results here? I would expect to see similar results with any mental tasks, and these self-control related tasks are seemingly chosen only to make for an attractive headline (taking advantage of controversy around ego depletion and the layperson's interest in matters of ego in general).