I don't think you understand how quiet USN subs are.Your position is contradictory. You entertain the possibility that in the future the PLA will be able to resoundingly defeat the US Pacific force while suffering tolerable losses (75% of the PLA force intact with 100% of the US force wiped out) and to do it with such speed and ferocity that Chinese industry suffers minimal to no damage. From your lips to God's ears is all I can say to that. Amen.
But why wouldn't the PLA destroy forward deployed US nuclear weapons along with the rest of the US force? Either the US withdraws these weapons or they are captured/destroyed by the PLA in the ensuing rout. If they're on submarines, then the PLAN will pop those subs or they'll withdraw to US waters.
Any base in Japan that hosts USAF forces will be subject to Chinese bombardment. Through much of the discussions here, we have assumed that H-20 and ballistic missiles will likely be used to overwhelm US bases in Guam, Okinawa as well as other parts of Japan.It would be so if this policy were a substitute for conventional overmatch rather than a supplement. China isn't North Korea (or the US for that matter) to rely on nuclear weapons to make up for conventional deficiencies. If China's conventional forces are strong enough and properly postured, then the US won't have the capacity to overmatch China with tactical nukes.
There's also another component to this that I don't discuss because it'll run afoul of the forum's rules (which is an indictment of the forum's rules that they constrain discussion of strategy). I've mentioned only China's response vis-à-vis the US homeland in response to strikes on Chinese industry; I think you can imagine what I advocate China do to countries like Japan who host US assets used to strike soft Chinese targets.
Germany lost WWII and have been the strongest power in Europe for 40 years.I don't even know what to say to this. If China suffers a major defeat in war then it's the end of human life on Earth. It's not China's lot in life to rebuild itself every time some imperialist scum prey on it. If anybody's going to be rebuilding, it's them.
Japan lost WWII and had been the strongest power in Asia for 25 years until China eclipsed them.
If China loses a war, it won't nearly be as devastating as those countries. It will be fine. We are but a small point in the long history. A temporary setback is nothing in the 5000 years of Chinese civilization.