I'm sure your T is too familiar with insurance companies and how they like/dislike certain credentials and not others. I wouldn't feel badly about that and how you stated it. You've chosen him as your T and include him in all your meetings, etc. and it's not as easy a role as your lawyer or accountant has, for example. I don't think the other team members think less of him because of the insurance thing. One could think less of a medical doctor if medical insurance didn't like him but not of a therapist; the degrees there have different "meanings" and purposes. Would be like thinking less of your accountant because he wasn't a CPA or CFP or even PA or some other of the many initials that can go behind their names but which only show a person's personal interests in that field, not how "good" they are.