I'm not sure what you are arguing here: that low performance teams do not exist, or that they do not need to be managed, or that we should provide free educational resources to their managers instead of selling them the tools they want?

It's a real problem real companies face, look at r/overemployed for a taste.

Would YOU like to work with your manager looking over your shoulder at all times? A good manager builds trust, rather than needing to rely on control.

Again, it's not clear to me if we're talking about the positive or the normative, descriptive or prescriptive, the way things are right now, or the way they should be in an ideal world.