Yes I do think some ts do encourage attachment ands it more about them and their own attachment needs.
I think ts that anxious ambivalent attachment styles are the worst. They anxiously worry and stress about their relationships and with clients and tend to be overly clingy when they feel clients pulling away or pushing them away.
My t swings I am still not sure what her attachment style is and it does drive me mad because she encourages attachment by disclosing too much about her herself knowing that I am anxiously worried about her.