First ATACMs isn’t long range; it’s only about 300 km. Tomahawk is what we use for long range, still have 50% of those. PrSM is brand new, didn’t have much magazine depth to begin with.

Second is the so what. Why do the Iranians, CCP, Russians have so many missiles and we don’t? Because the USAF and USN will almost immediately establish air supremacy in a conflict. So they invested in missiles to do long range fires. US does long range primarily with GPS guided bombs on planes. Our magazine depth in that regard is very very deep. Losing the ATACMs hurts the Army in a ground conflict (ATACMs was built to do counter fire on enemy ground based artillery systems and the air defense shooters that protect them.). Exhausting ATACMs is a luxury we can afford, won’t be valuable against China over Taiwan, range is too great from where we could shoot them, ie not Taiwan.