Scientific evidence suggests otherwise, mostly anyway. There is certainly a social aspect to some of these behaviors, but most are rooted in biology.

For example, research shows that young children favor gender stereotypical toys. This exists across cultures, and even across species as our nearest living relatives also exhibit this behavior.

I suspect that social environments have the effect of amplifying these innate gender differences via cultural norms and expectations.

Usually its the political right thats filled with science deniers, but when it comes to gender science, the left doesn't give a shit was science says, and this upsets me.