I think everyone has different needs in therapy and comes from their own unique place. For myself, I love when T shares anything and everything. I take disclosures as a sign of trust and authentic connection. It always ends up with me feeling a relational connection is there if she has some personal story that shows me she at least truly understands my experiences because she has similar ones.
Maybe your T really wanted you to know that he truly understands your issues by providing you proof from his personal experience. Maybe that isn't the right approach for you, in which case you should make that known.