My therapist is a trauma t who is trained in attachment trauma and developmental trauma. She is pretty aware of my dismissive avoidant attachment style and the reasons for it. She is very respectful of my boundaries. I am very aware of my boundaries too. I am also very aware of her attachment dance and the little things she does to "test the waters" so to speak. I can sense her continually checking the level of trust I have with her and how much I am willing to reveal or needing to pull back.
Yes, I do think she is actively promoting attachment, but I also think she is very wise and knowledgeable about what she is doing in that she simultaneously promotes independence. There is a crucial difference between attachment and dependence which bears mentioning here. They are not the same thing but often get confused. Healthy attachment does not include dependence.