I can give you plenty of real life examples where lacking physical capabilities can cost lives. Imagine you're patrolling up a mountain in enemy territory, loaded with 100+ lbs of gear, and the entire patrol has to wait for the weakest link, and people have to start carrying that person's gear for them, thus weighing the team down even further. Because of this delay you can't make your rendevous point and your ride out (helicopter, which you have very limited use of), has to come back at another time, so your patrol is stranded in enemy territory. I know, because I've personally seen this happen.
The fact is simple, women have a fraction of the physical requirements, even in the infantry, that men do. That is a HUUUUGE problem. These women that passed will be the weakest links in their units. I'm confused why you would defend lowering the quality of our combat arms. Physical fitness DOES matter, and it matters a LOT. If women want to be part of combat arms, they should meet the same requirements their teammates do.
Frankly though, the unit would just put that weak link back in the fob watching a radio or something, but then again maybe she'll complain of discrimination and they'd have to take her anyway.
I have personally been outside the wire without resupply for weeks at a time. This is a very real scenario, please do not talk about things you have ZERO idea or experience of.
Your massive ignorance of the physical requirements of modern combat is undeniable. You seem to picture all war as riding around a tank in the middle of baghdad.
When in reality it looks like this: