I have no doubt from my industrial experience that there are women capable of passing the Ranger School training. Two out of a hundred seems about right.
My daughter was in the Marines. She made the point that there are women who can do very demanding things, who lift weights, work out, and can pass tests. But she says the real test is when you have to keep passing that test, day after day, for months and years. She thinks the women will break down because it already stresses male bone structure to the breaking point - her 200 lb husband has shoulders and knees like a man 3 times his age after 2 tours in Marine infantry.
Like you, I think some small percentage of women can do it. I’m not convinced that means it is a good idea. My experience deploying with women is that sex causes lots of problems that are not there with an all-male force...at least, that were not there when homosexuals couldn’t openly serve.
I’m also reading a book now about the Marines in WW2. Given that the Japanese held up to the rigors of combat, and many of them were no larger than women here, the physical “Can you move X in Y time” part is probably OK. But going on patrols and bayoneting men, or trying to haul a 200 lb guy with his gear out of an open area after he’s injured? I don’t buy it.