Sam Harris clarifies what he was getting to on that Joe Rogan podcast appearance.
…I appear to have left many viewers with the impression that I believe we invaded Afghanistan for the purpose of rescuing its women from the Taliban. However, the points I was actually making were rather different: I think that abandoning these women to the Taliban is one of the things that make our inevitable retreat from Afghanistan ethically problematic. I also believe that wherever we can feasibly stop the abuse of women and girls, we should. An ability to do this in places like Afghanistan, and throughout the world, would be one of the benefits of having a global civil society and a genuine regime of international law. Needless to say, this is not the world we are living in (yet).
That last part makes me think of those conspiracy theories about the Amero.