I suspect our Evie might want to write him as well, because there's a debt she feels she owes. Merlin knows, these things are complicated.

They might be angry at him for how he left Hogwarts so vulnerable and are lashing out, or want to know how deep his allegiances lie, as he does a rather good job at projecting reasonableness and is no longer at the beck and call of His Mightiness.

I take a small degree in satisfaction that he was so roundly betrayed by so many he trusted. But I'd imagine the process of working one's way into someone's confidences can make that relationship difficult to sever without feeling the need to explain.

I just like to imagine they're all just taking turns yelling at him now that they can.