And you answered correctly. That's why US want to get Japan as equal partner in alliance.Staying out of the way?
'Militarization' of Japan, 'right wing swing' is of course product of PRC propaganda agencies who don't like the move. The only addition to the current state of things from China perspective would be only the capabality of pre-emptive strike on strategic facilities from Japanese SDF side. Untying hands of Japanese means for China also that they can be side in a conflict and that's huuge strategic pain in the ass if there will be military treaties signed between Japan, India, Taiwan, Australia and some ASEAN countries. US Navy could be more concentrated on the South-East Asia relieved in the north to a certain level at the same time.
US could benefit greatly by the change of Japanese constitution.