Germany I get, they've gone so far authoritarian left on everything it could very well be creating Weimar conditions all over again.
Japan on the other hand I don't have any problem with rearming. Modern Japan is one of our best allies and is a completely different country than WWII era Japan. With the way things are going in that part of the world I can't blame them for wanting more defense. And it's a good thing for us, Taiwan, and our allies having more friendly defense capability in that part of the world. There's not much over that way outside of South Korea and the US.