I say, in a way, it can be how some people are when they get a brand-new car. When they first bring it home, they love the aroma of the new upholstery, for the first few weeks, they're out on the driveway washing it every week, and they're "No, don't touch it." But after a couple of months, as the aroma fades, the less cared about it gets, and they only wash it when they feel like it.
Yes, it can be novel, but where SOME autistic transgenders can have an advantage is that we don't like certain sensations against our skin, so we don't change that much. I remember, when I was 11, and I had bad acne, my mother rubbed some Clearasil thickly on my face before bed, and I couldn't sleep. As I transition, I don't plan to change my style that much. Loose polo shirts, maybe a few cropped ones, but ONLY in the company of a few female friends, longer shorts or capri pants. Jeans and the like.