I'm going to apply Amber to this thread.
Amber is a family group of royals that do not trust each other and are loathe to share their secrets with each other even when they need to. They often have plots to one-up the other. When they do share information with each other, it is often done only on a trading basis. You give me one piece of information, I'll give you this other. So, I see a strong semblance of "keep secrets," "don't trust" in play with Harry at first. And like many of you, he has outgrown those things to the better with experience.
To a point. But that's also how the Council tends to operate overall. Wizards horde knowledge because it's their currency of power. JB once said that if the Senior Council pooled their knowledge, they'd know most of what there is to know about Harry, but they don't pool their knowledge. It's not the Wizard way.
