This is a great weapon to fight inferior forces. Fighting a more conventional foe, like China, it won’t help much. I would expect China to shoot down all our satellites in the first few minutes of a conflict.
We'll find out in a few weeks if we can do the same. The interesting thing without satellites is that if they shoot down everything, that means no GPS, no satellite-guided bombs, etc. I'm sure a lot of civilian operations would be affected. The military uses civilian satellites, too.