That all sounds pretty normal to me. If the dynamic seems to be working for you, if it is a dynamic that has allowed you to open up and work towards your own therapy goals, then it doesn't seem to be a problem.

Not sure what you mean by you "are both just avoidants" unless you feel like you are using these dialogues to avoid working on your own issues. However, you said your therapist does qualify what he is telling you about himself as pertinent to or similar to your own situation, as an example. That also seems pretty normal to me.

I never had a blank slate type of therapist; it never would have worked for me. Actually, I did have one briefly (I keep forgetting about him); it was like talking to a doorpost and I didn't see him very long - so incredibly impersonal and boring - almost lacking a personality from my perspective.

My therapists always had pictures of their family in their office. We chatted about light stuff a little each session, so I felt I knew them a bit (and was therefore never curious about their lives outside of session because they were open enough with me - in a very professionally boundaried way). It honestly was a nice balance between professional distance and personal information that was quite comfortable.

Either you are overthinking (by your own admission) or there is more than you are saying that is making you feel uncomfortable. But going only by what you have said in your first post, it sounds like you have to decide if you are overthinking this or if there is more to the story. Hard to know from what you have shared.