PAA,
“How so?”
Throughout Jewish history and throughout chazal’s writings women (as do men) are assigned a very clearly defined familial, social, and halachic, and even behavioral role (for one famous example, ref. Rashi on Shlomis bas Divri). To deny the existence of this is irrational, and to try to redifine how masoretic Judaism interprets these definitions is, again, a deviation from our mesorah.
Even looking at non-Jewish culture, you will find a period in American history (around the time of the Industrial Revolution) where feminists pushed for a dissolvement of what the society of their day called “the sphere of influence” of men and women – a defined role that women and men played in society. I am not saying that their definitions are correct, but I amm simply pointing out that the nullification of such a concept would be a relatively new phenomenon, heavily related to the feminist movement (which every credible Torah authority agrees is not in line with the mesorah).
“Why not?”
I am not qualified as the authoritative voice on what is or isn’t the definition of smicha, but it is well known that many reliable people who have been given the podium to preach and teach are not musmachim, and likewise many musmachim do not utilize their smicha to preach or teach. Receiving a smicha is typically not incumbant fulfilling a quota of classes given or speeches written. It stands to reason that this is not the main point of attaining smicha.
Besides that fact, it is objectively silly that there exist women who are fighting tooth and nail to become “rabbis”, when there exist many smicha programs whose hasmacha isn’t worth the paper that it is written on. To those women I would say, “mima nafshuch?” If you want to get a real, kosher, well recognized smicha from an institution such as the Mir, Lakewood BMG, Chofetz Chaim, or another recognized Torah Yeshiva – you never will because in their eyes you embody the antithesis of having a Torah mesorah. On the other hand, if you want to get a smicha at any cost, you can probably get one online at a variety of conservative or reform institutions, but it won’t be worth anything to anyone who knows anything. You can’t try to redefine Judaism and force all those who maintain a traditional view to succumb to your ideology and demand their respect. I think it’s silly.