Because you're putting the label that they are for girls/boys....that influences what the parents/kids like.....You really think a conservative mom/dad would like if their kid suddenly started incorporating Barbies/Dolls into his toy playing? probably not......and the kid, if he had any social IQ during that time, would know that playing with such toys will put a target on his back for bullying etc so they will automatically disregard those toys as options.How so? Boys and girls tend to like different things.
Is the lables that ruin this...It's like Pink = Girls and Blue = Boys for baby/kids clothing....It's complete bullshit, nothing natural about it at all, but guess what that label influences parents decisions...Never seen a boy with pink clothing or vice versa.
inb4 Scientific studies where toddler girls play with dolls better/toddler boys play with trucks/toy tools better.......even if their is a genetic predisposition into what sexes like, putting gender labels on them is ridiculous....Just let fucking kids pick the toys they like, don't put damn labels, , just let them have freedom to pick.