It's odd to be sure, but probably harmless.
What I got from
the video clip is that the group of Australian parents have agreed not to enforce sexual gender norms on their kids.
That may be more difficult than they think.
But, it's interesting. What if you had grown up not being categorized because you were a girl? What if you were allowed to choose your own toys and not be given baby dolls and easy-bake ovens to play with? What if your parents asked you what toy you wanted and you picked a dump truck?
What if you were allowed to grow up without your parents or society pushing you in a specific direction?
I don't know what will happen, but I remember reading about Brad Pitt' and Angelina Jolie's daughter (Shiloh) who identified as a boy when she was young--wearing all boy clothes and cutting her hair like a boy. When hormones kicked in as a teen, it seems she felt more like a girl and now dresses like a girl. I remember Jolie saying she wasn't going to push her in any direction.
It will be interesting to see what happens with this new parenting experiment. While it's not my preferred brand of parenting--I don't oppose it.