I haven't met anyone who has truly resolved being traumatized; even folks who have spent years and decades seem to still have reactive bits. I prefer to see Ts who have not been traumatized. I would be fine with someone who had addiction issues, depression, anxiety. But I am also fine seeing Ts who don't. My Ts have mostly not disclosed. One T has said that she sometimes dissociates. One T told me about her sex-addicted husband and how that affected her. My ex-pdoc was quite open about alcoholic past.

But I don't think that you have to have experienced something to help people who have experienced or are experiencing it.