This seems very fair to me. Many therapists believe (for whatever reason) that the person they work with should not know anything about them. I find that to be a ridiculous assumption. How can you trust someone you don't know. On the other hand, if a therapist goes on and on about themselves, I sometime feel like I (as the client) should charge them for the session.
Yeah, finding the balance between these extremes is essential. Though, I imagine, probably very difficult.
I have to be open and honest with this person about my most intensely personal issues. And I'm just not going to be able to do that with someone I know nothing about, or if the relationship is entirely "professional."
At the same time, if I start to see this person as a friend, if it feels too personal, I'll worry too much about
their mental state. Feel like I have to pretend to be okay, shield them from the worst of the crap going on in mind, just like I do with everyone else.
The other thing is; while I recognize that (of the two of us in the room) the therapist is the expert on mental illness, they sometimes do not recognize that I am the expert on my life and experiences.
Hard to explain, will use myself as an example.
I have generalized anxiety disorder and panic disorder with agoraphobia. If I say to my therapist that I don't want to leave the house because I am afraid that X will happen, it is entirely possible that it is my own negative thoughts and biases causing me to believe that. At the same time, sometimes the reason I am afraid of X is because X happens to me with amazing regularity. And, if that's the case, no amount of CBT or medication or whatever else is going to help if I can't figure out why X happens and how to prevent it.