Gender is not fluid, but sanity is. Some children are neglected and psychologically abused by their parents. Sometimes a child who can present as sane chooses instead to identify as insane, either for the day or permanently.
Liberals have redefined “Transvestism” as “Transgenderism”.
It’s amazing what magical powers the “word-smiths” think they have.
Just like fat witch doctors who thrive among primitive “cultures”.