Listen bug, if someone thinks that they are in full control, then this is the first step to losing control.
You should always question your control and have a sufficient level of self-criticism and reflection for constant development. If you think that this is not about you, then that's your business, but self-confidence has not brought anyone to good. As well as not being able to communicate with interlocutors is disrespectful.
When someone thinks they’re in total control all the time to a point where he’ll be doing exactly what he should not and still be thinking he’s in control.
But i would disagree with your point that self confidence has never brought anyone any good. It has brought a lot of good to a person with self confidence. Self control is what really helps a man overcome a lot of things. A person could easily fall deep into any vices without self control.