"BEFORE women's lib you could argue they weren't good at chess becaue they were banned from the tournaments etc. Buf after they got access, this explanation just isnt relevant anymore."
I don't know, I don't think that's totally fair. Men's and women's lifestyles developed depending on their society, which would of course include laws. For example if a woman was banned from an activity, she wouldn't develop a lifestyle around it, and women wouldn't be raised to do so. This wouldn't just immediately disappear as soon as laws changed, because by that time their lifestyles would have already been developed around other things. And consequently, ideas on how to raise girls, would have already been developed around other things. And it's easy to gravitate towards better known customs -- more comfort and predictability, for one thing.
Eventually things can start changing of course, and they do. But it does take time. And it's probably hard to totally eliminate the residue of the past. There are plenty of women that are totally drawn to the traditional gender roles, and I don't think it's a total coincidence that such roles were what they were pretty much totally forced into back then.
(Not that there's anything wrong with deciding that you want to follow a gender role. But you should believe in that decision with your own judgment, rather than let someone else, or society, decide on that for you. You deserve better than that.)
To me, it's just excuses really.
I mean, wonen's lib, it's not like it happened in February 2013 and we need to wait for the dust to settle and so on lol.
If the potentials are identical, the first generation of women chess players that started off after women's lib kicked should be playing just like male players.
They just don't. They aren't ostracized anymore, and they still don't become world champs etc. So only explanaton left is biology.
What first generation? I would suggest that we are still in it as we are barely out of the opening chapters of women's lib and as long as women have a separate title streams that separates women, chess may never be out of it. The first GM's were the Polgars in 1991. We're on our third WC since then and only the first WC to be younger than either Susan or Judit.
Some things take time. The first female lawyer in the United States was called to the bar in 1869. The first Female Supreme Court Justice was appointed in 1981.
Though, maybe it was biology.
1981 is a long time ago. I take it we can say women's lib was done by then. I'd put in in the 70ies myself.
So why the women don't reach the men's chess levels in that many years?
It's like someone that fram 1981 predicted the apocalypse coming 33 times, and each time says "nah, i was wrong, it's next year". At some point you just realize, it ain't going to happen.