It's cyclical not linear - there was strict division into boys'/girls' toys, then there was an interlude when kids could just be kids - 35 years ago sounds about right, before the Princess/Fairy/Butterfly thing took over and then it was back to boy's toys/girls' toys.
Excuse the derail from GG, but the issue of the rise and fall of blatant stereotyping interests me a lot
A catalogue from the biggest toy shop here in Ireland came through my letterbox recently, and being a bit of a gender nerd, I went though it to see how toys were presented:
Toys for under 3 or so, kids were 'unisex', and the children in the photos were mixed.
After that, there were two streams: the big names like Lego have obviously copped on to stereotyping, and they don't have any photos of children at all; one or two brands have a girl as well as a boy but very few.
However:
All dolls had photographs of girls.
All pretend make-up, crafts like bead-making etc were all girls.
Most of the 'action' toys didn't have photos of children at all, but those who did had boys.
The science sets section was mostly boys and men on the boxes, one or two had a girl - the girls are often 'hovering' rather than participating actively.
Then in the corner there were two science sets that were for making perfume and... something else, I can't remember. These two items had a border of a pink haze around them separating them from the rest of the page🙄
So technically, the big companies go gender neutral, but subtle and not so subtle division into girls' and boy's are worked into the colours, illustrations, etc.
And dolls are for girls, full stop.
Derail over, sorry!