You know, it is hard from a distance to tell the significance of this. It could be many different things, depending on his manner and all kinds of cues you could pick up in person. He could be just being very direct and honest with you, saying "Yeah, it is kind of insulting to have my judgment called into question. " Or, he could be getting defensive and blaming it on you. Or something else. Maybe you need to collect more "evidence" before you decide for sure.

An experienced T should be able to discuss this with you, and not load you with responsibility for how he feels. A problem I have is sometimes I get triggered and so panicked that I cannot think clearly. Then I can't collect the clues I need to figure out how much danger there really is here. Again, a good T, I would think, would know enough about how frightened people react to know how to work through this. But probably many T's don't have this much insight into frightened people to know how to do this without getting overly triggered themselves.