But in case you're curious about the actual answer
Ages ago I was doing some research on the prevalence of different paraphilias (my main focus being zoophilia as I was contributing to WikiFur), and this was one of the few large representative studies I came across. There's one more from Canada, but they didn't ask about autogynephilia/androphilia.
It's quite clear by now that it has practically nothing to do with gender incongruence, i.e. trans folks, doesn't mean that it doesn't exist as a paraphilia. That is, just because Blanchard got his theory wrong based on incomplete data and probably a good dose of being born into certain social constructs doesn't mean that no cis men get aroused at the thought of them as a woman. It is, as the study in the comment you replied to shows, actually quite common.
Gotta distinguish between the phenomenon auto[gyno/andro]philia (exists), Blanchard's interpretation wrt. trans folks, (falsified), and TERFs (hateful anti-science assclowns). Otherwise we'd be kink shaming.
Many of Freud’s early patients were dissatisfied housewives. I have no difficulty believing he accidentally discovered trans men and came to the conclusion all women wish they have a penis. Hirschfeld he was not.