I have similar impressions reading LT's posts but am never sure it is an objective one - why I try to refrain from more detailed responses regarding this particular therapist of LT's. I know I have a positive bias there, which may not be completely realistic, more my preference.

In any case, what I sense (and you pretty much say the same above) is a pattern of wanting to be fully accepted and understood, no matter what you say, by someone who is in that specific role plus is meant to maintain some distance as a nature of that role. Wanting them to change and adapt to you better even when they state clearly their limits (or perhaps especially then?). Not even being okay with 5-10% disagreement, even probably wishing that they lied to maintain an illusion and fulfill a wish? I do feel that the therapy with MC may have been more satisfying at times because it superficially seemed to feed into that illusion, but then frustrating for not maintaining it consistently. I also wonder why someone chooses to see a therapist as an authority figure at all - for example I never saw mine as such and never would any T. I think these (including my refusal to experience them as authority) are subjective perceptions and projections we designate to them and then mentally build upon it.

My last T once said, when we were discussing boundaries in therapy, that he prefers not to state them in speech but practice them individually with each client, based on that unique relationship. And that when boundaries are stated by a T repeatedly, it tends to be a call for both the T himself and the client to want to break them, change them, whatever. I think it's basically the same as actions speak louder than words, and it is easy to say words that we cannot stand up to with acts. I don't think there is any one person in the world who is able to keep the exact same boundaries and styles at all times, be 100% predictable, and I personally don't think it would be healthy and progressive. That would be more a machine, and even machines break sometimes. But it is a good practice to make current boundaries as transparent as possible, and someone saying they are okay with something when they are not is pretty much cheating on that principle, or misleading at minimum.

Another thing, I imagine, might be frustrating at times with this T is his relatively simple perception of interpersonal interactions vs yours, LT. But just looking at people in general, and the average, I do think you are toward an end of a spectrum in terms of how much you think about, analyze, and read into others' reactions and behavior. Perhaps this is part of what he wants you to see and accept, that it is not that people don't accept and respect you, simply that their natural perceptions, thoughts and feelings about relationships and communication are different and maybe less complex and detailed. That a lot of your anxieties might come from torturing yourself with perceptions and thoughts that are unique to you and rarely occur to others, or at least not in similar quality and quantity.

I don't know, I'm just speculating here and it may be off.