I think they are perfectly legitimate questions to ask... Personally. The only thing I can think of is that maybe they seem to many, and a little overwhelming. But surely a good T should be able to manage those feelings, break it all down and go through it all with you!! I

I think it's right to get a good fit, and if you knowing they have experience with these things is important to you, then I think you have a right to ask, and I think they have a responsibility to help you get to a place of understanding. Whether they answer all of them in depth or not.

A brush off like you got doesn't seem very good to me at all! That said, I wouldn't write off a T, maybe try emailing and see if written down you get a better response?