I also would like to validate your decision to not talk to your therapist about it.

Knowing what I know about therapy now, I'd do the same. Because I know that the response, most likely, would be a "professional" silence, which would, again, create the same feeling of being dismissed, disregarded in me that I've had from childhood. Or, in the best case scenario, I'd get yet another reminder of the historical origin of my feelings, which is something I am already perfectly aware of. May be there would also be some standard "empathetic" response thrown in as a "therapeutic" intervention such as "how does it feel to tell me about this?" Any of the above responses just re-create the original trauma and do nothing to address it.

If I were in therapy today, I'd also not discuss any reactions that a therapist's demeanor and personal style evoke in me. It makes sense to discuss some specific therapist's actions that bother you, but not their style of working. Every therapist picks the style, the methods and the theoretical approach that fits their personality best and they are not going to change it for a client, who gets triggered by it. In my experience, all those "therapeutic" discussions just led to my trauma getting more and more aggravated. I've figured that if something about the way the therapist works is too triggering, then it's better just to change a therapist instead of trying to "work through" it. Just like with any kind of service, I don't waste time insisting that someone should be doing business the way it works for me. I just find the provider who can reasonably meet my needs.