This person is having a very very different experience of gender transition than I am. Transes are "immune to optical illusions?" WTF?
They might just be looking for proof that the hormones are Doing Something a lot harder than I do after twenty-something years on them. I sure was looking for that for a while when I started. But this whole post really just reminds me of the time I got some acid that had completely evaporated by the time it got to me (if it had ever been any good in the first place) and I sat there trying to convince myself I was about to start tripping any second now.
It's certainly had an effect on me or I wouldn't have bothered with the hassle and expense of continuing to acquire and take it for more than two decades but I'm sure not seeing more colors or "changing the balance between entropy and harmony" in my awareness of the world around me. My general happiness level has changed for the better. shrug
(I'm also an artist, I was one long before the transition, so maybe I just, like, paid more attention to color and shapes in the first place, who knows.)
The estrogen-to-witch pipeline is however a real thing.