So many words, so little meaning. So much sophistry from the uninformed and inexperienced. "Direct combat" is a thing of the past, but you of course don't know that.
Short-term effectiveness will be affected, but long-term women who don't want to serve in the infantry just won't join the Army. The military will sort itself out just as it has since time immememorial, long before there were even conservatives and liberals.
Just because they can does not mean they will. This brings an end to the Jane Crow military with its "separate but equal" jokes about women putting themselves at risk from far out of range.
Wake up. Grow up.