Earlier quoted context omitted.
in times of actual war, i doubt anyone in the military would care. The result is undesirable but there won't be any threat to life as a result, and there is always a chance the debris problem can be solved in the near future (just shoot it all down! lol)
The US military was able to stop using the U2 because they had imaging satellites for remote reconnaissance, nevermind that whole GPS thing. It would be a severe hit to their capabilities if space around Earth was made unusable.
again, you're right, in times of peace they care about capabilities. in times of war they care about victory.