Maybe there are a lot of bad managers (almost certainly there are) but I feel like a lot of the talk about what a manager doesn’t address the true role of a manager, the whole point of a manager is to address uncertainty, and look to the future. The manager shouldn’t have any “tasks” per say, but in the vending machine example, they’re the one that keeps an eye on their suppliers, negotiates, changes suppliers if one fails, decides how much inventory to store in a warehouse.
But like, I as a manager try and delegate the coordination role yes. Unlike an IC, loosely speaking the more ‘tasks’ I’m doing as a manager, the more I consider myself to be failing at the job.