I think there's a level of "conditioning" that can still be pretty authentic. As I posted previously, over a long holiday, I was wearing exclusive women's clothing over basically all of it. When I was dressing for work, I actually was fumbling with my dress shirt buttons just because I'd inadvertently feminized my habits.
So stuff like conditioning Nick to respond to his new name, messing with his language senses... those seem to be possible to me. I know that when I was traveling abroad and was exclusively speaking in Mandarin, switching back to English was sometimes jarring. Where I heard it. I understood it. But it was almost like my brain took a second and was trying to process English as Mandarin. Or frankly, there's some words that are soundalikes between Chinese, Japanese, and Korean. When overhearing some of my Korean coworkers, I've sometimes been like "Why do I understand some of that...?" and the brain does a bit of a "reset".
Also having played with feminization hypnosis tracks for years, I'd say that there's some aspects that work. I've definitely fallen into a trance and basically had a lucid dream where I saw and felt like a woman. I've woken up and been disorientated having in the moment "forgotten" what my body looked like. And I've definitely had a phrase from one of the files popup in my mind when something I stumbled upon something associated with it.
I'll say, so far, I've not ever dropped to my knees and given someone a blowjob, despite years of triggers that should have made me the biggest sissy slut on the planet. But I'd be lying if I said that the files haven't at least made me less more open minded towards anal play with toys.
I guess, I find myself finding it easier to suspend disbelief on being mentally femininzed through conditioning/hypnosis, compared to some of the before and after physical transformations through "realistic means" that some of these stories have, lol