I feel very strongly about this issue. I have only a son and I think your points are excellent OP. I also hate how girls' toys are sold as being about attractiveness etc but personally I have a boy, so I notice it from the opposite side. I feel the message we are sending boys about being nurturing/creative etc not being manly is something that has a lifelong effect too.
My toddler son has two parents who both work. We both clean the house. We both wipe his bum. We both cook. He both push the buggy and snuggle him at night. His dad says how much he loves him all the time and hugs him all the time, as do I. To him, grown ups can live pretty similar lives regardless of gender and both can be nurturing and emotional.
So it depresses me that DS' three year old female cousin tells him he can't like Peppa Pig as she is for girls and he will have to like George because boys can only like George. My stepsister complains that she doesn't know what to buy him because she doesn't know what boys like. He likes reading, arty stuff, role play, throwing a ball - exactly the same as her daughter!!!
It depresses me that while all the science kits may be for boys (I had all those, not my brother, by the way) all the crafty kits are pink and purple for girls.
I disagree entirely with you stumpy. I'm not saying anything to you apart from disagreeing as you're entitled to your view obviouly, but I do not share it. I don't think that most of the time, boys choose boys' toys and girls choose girls' toys. I think kids love all kinds of toys and I just think you are limiting their imagination by categorising them by gender.
But then my brother did build a rampaging army as a child out of dinosaurs and My Little Ponies as he thought the ponies looked like they could deal with troublemakers.....