When I was that age, I could easily have chosen to "be a girl" if my parents were encouraging it. It wasn't until I hit puberty that I even had an interest in my sexuality. What does a six-year-old know?
“What does a six-year-old know?”
Exactly. Children need guidance.
When my boys were 4 and 6, we were visiting my parents, and they got into my old closet. They emerged, each one wearing one of my old semi formal dresses that I had worn to weddings.
We took a picture and then their dad told them we now had to change their names to girl names, and they would now be known as Diane and Darlene.
The oldest got mad at him, said they were not girls, and they quickly got out of those dresses. Never happened again.