It’s BS. The typical Army Ranger runs 5 miles in less than 30 minutes. I sincerely doubt any woman could pass without lowering the requirements. The graduation rate in 2011 was 42%, and students lose an average of 25-30 pounds during those two months.
I was a Marine. We had one of our Scout Snipers go to Ranger School. He was a lean guy. He came back a lot leaner.