Genital mutilation & puberty blockers | Gender Transition

Why is it legal for 12 year old kids to change gender?
Who profits from this?
Who are the responsible?
Who are behind this?
Are there a bigger agenda behind this?
Is it just a "coincidence", "stupidity", or "human error", that this is happening every day?

You don't need to be an expert to know that some girls got a "phase" where they prefer "boy things".

They typically get over it and start behaving like an average girl at a later point. This is common knowledge. You don't need to go to university or take an education to know that.