See, I don't mind if an adult chooses to change their name to something weird, especially if it brings their name into alignment with their inner reality.

Really, really object to parents saddling their kid with a name with connotations/themes that suggest a personality type. Like, if my parents had named me Princess Trixie. I would most definitely need to change it to Full Cream Ice Queen Trixie. Yannow, just so my outer matches my inner.