Toddlers to be taught cross dressing in Victoria

I am so confused. According to this article (behind paywall, put title “Toddlers to be taught about cross-dressing in controversial sex ed program” in Google)

“Children are sexual beings and it’s a strong part of their identity, and it is linked to their values and respect,” she said.

But I thought gender was a social construct and your biology was not the main determinant of your sexual identity?