I blame the parents.

Small Girl: "Hey mum, I want to be a crane operator when I grow up! Construction equipment is awesome!"

Normal Parent: "That's nice. Here's an amusing toy digger for Christmas."

Nutso Parent: "OMG! I have a trans kid! Quick, let's buy her loads of boy clothes and get her onto hormones!"

Girl: "But I don't like boy clothes. I want to be a girl crane operator. Who says girls can't operate cranes?"

Nutso Parent: "REEEEEEEEEEEEEEE INTERNALISED TRANSPHOBIA!" *proceeds to gaslight child into being trans or at least enby*