A lot of people probably question it because it seems like it would be weird, but it's really to be expected. The kind of alienation that would lead somebody to question their sex is the same that would lead to questioning the political doctrines of modern society.
Moreover gender confusion has been associated with spiritual insight for millennia. Shamans and wizards have always been known to dress up as women for many of their rituals. There is a metaphysical reason for this but I don't want to seem too schizo so I'll just leave it at the anthropological.
I think you did a good thing detransitioning, by the way, but you shouldn't feel excessively ashamed of the past no matter what. That will only lead to continuing despair, which is how the enemy hurts you. NatSocs have a positive vision for the nation when we win, so don't be overcome by negativity between now and then.