EDIT: The more I think about this:
> "Equal before the law" and "equal member of society" does not mean "the same in every way", and trying to enforce the last of these can be harmful rather than helpful.
the more this frustrates me. No one is saying everyone should have to be the same. Did you even look at the LEGO products? What parents are reacting to is the reservation of action, space, science, adventure, technology, etc. for one gender and homemaking, baking, beauty, and animals for the other gender by putting very distinct gender-specific markings on them to make it clear which belongs to which. I'm extremely skeptical that girls just genetically prefer pink things and dresses. This is about forcing people into cultural categories which limit their options for individual expression, not some silly attempt to make everyone do the same things.