You've got to hand it to those social engineers, they don't stop trying. Some friends of mine made huge efforts to avoid any gun or sword toys for their two boys to no avail; the boys used sticks, bits of pipe and the most unlikely scavenged household objects to replace plastic moulded Chinese toys. Eventually they gave up. Now some Swedish fascist (and I've always thought the Swedes made the most vicious concentration camp guards; they invented compulsory euthanasia after all and were still forcibly castrating morons in the 1970s. I'll bet Sweden will be the first nation to start killing fat people) has decided that children should grow up without knowledge of 'gender' difference so that inequality in adult life may be eliminated. Three points.
1. As my old latin master, used to say: Nouns have gender, people have sex.
2. Even if you keep a girl in complete sensory and educational isolation with no knowledge at all about her sex, she will still choose pink. It's a DNA thing.
3. The proximate reason women on aggregate earn less than men, and I cannot repeat this loudly enough or often enough, is that on aggregate the female workforce is less experienced than the male workforce because women on aggregate spend long periods out of the workplace having babies.
Sweden, of course, is an overpriced, overtaxed EU Hellhole in which 87% of housewives (and oh how they'll hate that word) have banned smoking in the home and is the model nation chosen by Lady Toynbee as her exemplar.