When my boys were young and I took them to play groups, the types where the mums stayed and had a coffee. It seemed to me that never a week went by without some girl coming up to say "he can't do that, he's not allowed on that, he's not doing that right", at that time it got on my nerves so much so, I was inclined to say under my breath to all these assertive young female children "why don't you mind your own business" which generally took the wind out of their sails.
Before my younger son went into his school nursery, he went to a private one a couple of mornings a week that appeared to be run by two four year old girls. So adept were they at organising all the younger children the woman who ran it, and bearing in mind they were both blonde, referred to them as "the valkyries" all they seemed to be missing were a couple of horned helmets !
My granddaughter was of a very positive nature when she was a very little girl, but less so as she's got older. Her younger brother however, does like to issue his own edicts at times of a very sexist nature such as you can't play with cars because you're a girl. I don't take exception to his chauvinism because that lets me out having to scrabble around on the floor, and more importantly he thinks of me, mid 60s, as a girl So it's a bit of a win win situation as far as I'm concerned.