I would point out that the physical requirements of a Soviet sniper during the Great Patriotic War are substantially different from a Recon Marine kicking in a door in Fallujah. Simply the amount of gear carried has increased dramatically, and I dare say that in Ukraine, in 1944, Mrs. Mikhailova-Demina likely didn't have to contend with the potential challenge of dragging a 200 pound man wearing 70 lbs of gear out of a burning humvee.
Now, with that said, there should be every opportunity for women to serve, but the minimum physical standards should be calibrated to meet the requirements of the warfare mission, not the lower standard deviation of the mean average for the gender.
As a practical example I was required to meet a minimum of 37 pushups when I was a 20 year old sailor to pass that portion of a PRT (I did more, but that was the bare minimum required). During a damage control drill I had to hold a forty pound steel patch plate over my head, pressed against the bulkhead while standing on the guard rails in the main fire pump compartment so the rest of the damage control party could setup the shoring to pin it in place. I personally found this a very taxing experience with my arms approaching muscle failure. Can I really count on the 20 year old female who is only required to be able to do 19 pushups to be able to physically accomplish the same evolution if necessary?
Military service is a physically demanding job, and there is no politically correct way around that fact that does not in turn endanger lives.