i agree that in a healthy relationship both parties should be able to freely and honestly bring up concerns in the relationship, but where i find this idea of asking for feedback to be helpful would be for those clients who may be new to the process of therapy or the relationship and who may not have the skills, due to a lack of confidence, assertiveness, lack of trust, or other underlying fear to honestly speak up and let their T know that there may be issues in the therapy. this is evident many times here on this and other forums by those who seek feedback and support for something their T did or didn't do, but they do not have the confidence yet to bring that topic up to their T on their own.

my ex-T did ask and gently probed for feedback in the early days of therapy with him, but as time went on and as i started to trust him more, i began to gain the confidence to freely speak up when something in therapy or the relationship was not working or was bothering me. i reckon that this feedback process is not only good for the T, but at helping to reassure the client that their concerns are ok to bring up and will be acknowledged.