A lot of STEM toys have been dumbed down to the extreme irrespective of gender.
Growing up in the 80's there was a lot of ads for e.g. chemistry sets that at least allowed for some proper experiments advertised even in comics books targeting relatively small children (I grew up in Norway; I remember ads like that even from comics like Donald Duck & Co which mostly targeted pre-teens), but I instead got handed my dads set from when he was growing up in the 60's, with full set of suitable glass ware, and the books he had, which outlined full sets of experiments "for young boys" that included making gunpowder and assorted proper fireworks, and stuff that included (genuine) warnings of what to avoid to prevent the experiment from exploding.
Nothing outrageously dangerous, but some of them were the kind of things you might expect the teacher to demonstrate in a high-school science class with appropriate care and safety equipment, rather than the kind of stuff you'd even in the 80's expect a hobby chemistry set to actively encourage the way the 60's books did.
And indeed, my main limiting factor in carrying out many of the experiments was that in the intervening years it had become a lot harder to buy a lot of the chemicals listed without being 18 or buying via a business. Though there were still other fun things to do with them. For example, I did find it very amusing when I managed to add a layer of lead to one of my moms silver spoons via electrolysis (the books did have appropriate warnings, so I did know that continuing to use said spoon afterwards would not have been a particularly good idea; but not sufficient warnings to make me consider that perhaps I shouldn't have used the silverware) - my mom was less amused.
Move forward to today, and the 80's children's chemistry sets looks fantastic compared to most of the stuff on sale.