It's useful because it's adds yet more evidence to the idea that much of what we used to think was inherent to each gender is actually learned.
Social justice is ruining the academy. It's boring, reductive, and anti-intellectual.
My impression from the article is that it's far too soon to draw any kind of definitive conclusion on the matter.
Thankfully science doesn't turn on a single article. Or it shouldn't. There's an absurd amount of robust evidence for physical differences in male/female brains, and male/female behaviour. And neither can be explained by culture alone. There's entire wings of academia dedicated to the motivated denial of this fact. See Steven Pinker's "The Blank Slate" for extensive details and documentation. It was written 20 years ago, but it's just as relevant to day as in the early 2000s. (I re-read it recently. Yes I have a PhD in a relevant field.)
We have a equal opportunity Calculus class -- it's fully integrated.