I'd agree that's why we're seeing more of it. But my personal opinion, based on just my own observations, makes me think it's a subset of the midlife crisis. Just instead of reclaiming their youth, they want to reclaim a youth they never had - which happens to be tied to a fetish they are unlikely to have been able to explore as they were living normally.
So there's this very small number of men who look at their life, wonder 'is that all there is?', but instead of the stereotypical midlife crisis actions, like the fast car or the younger girlfriend, decide that they should completely upend their life by being their own fetish object - as well as this urge to control normal women which seems to frequently go hand in hand with trooning out. And again, privacy of their own home, etc. But part of it is this need to be recognised as beautiful, normal women by everyone. And they get very annoyed when the world at large doesn't just accept it.
I think one small, but telling, example of this is with the troons who won't accept gender-neutral bathrooms and demand to be accepted in the women's bathrooms. Trans people just want to go in peace and not be hassled, and so gender neutral is fine. But troons, especially these autogynephiles, are demanding to be accepted as true and honest women, and they will get violent if you deny them that.