The result of the Imperial remnants wiping clean of their atrocities from the history books. When your history is full of shit, of course you don’t want to know about them.
It's really hard to reconcile the directive of honoring your ancestors and actually acknowledging the crap they were up to. You can compare it to how it can be quite hard for Chinese people to talk about the history of the early 20th century because there's a lot of ugliness there. Another difference is that Chinese audiences love historical works and there's tons out there everywhere from the Zhou dynasty to the Qing one but Japanese audiences aren't into that kind of thing so they don't even have that as an outlet.
The vast majority are actually passively apolitical. They won't bother about politics until they're forced to. When that happens, they tend to refer to what they learned in schools or the most influential voices.
It's more that they don't want to examine what's happening politically. If they did, there might be real democracy in Japan, but as we all know, there's a reason why it doesn't exist.
There is also plenty of anti-war pacifists in Japan, but their voices are increasingly being suppressed by the media.
They don't drive around in vans with loudspeakers. These pacifist are vastly outnumbered and less influential than the fascists.
