[bumby]

>it takes time away from the team for the manager to function.

I think a more accurate take is that it can "drain resources" from the individual to provide a net positive impact to the team (ideally). The problem with a lot of the cynical takes here is they appear to be only considering the perspective of the individual.

It's like the idea that if somebody stops by my office to ask a question; it's great for them to get an answer, but a detriment to me because it interrupts my work. If all I cared about was personal productivity, I would lock my door but the overall team productivity would likely suffer. A good manager puts together a system/culture that balances all those competing goals to the betterment of the team.