I'm curious as to what sort of propaganda or misinformation you're referring to. I'm in Europe and I haven't seen much of it, but maybe it's different in the US.
Worse, an entire generation of young men especially are being told that WWII wasn't what it really was. You see the results of this in the US but also eastern Germany, Poland, Hungary, across Europe where right wing parties are on the rise substantially supported by these young men.
Not to mention the US literally rounded up citizens who had Japanese ancestors and sent them to concentration camps. They apologised, decades later, but note these aren't enemy civilians who happen to be in the wrong place, they're your own citizens who merely look similar to the enemy.
Because the Americans sent babies to these camps for the crime of having ancestors born in Japan there will be a decade or so of people who have memories (albeit fuzzy ones) of this actually fucking happening to them after the people who fought WWII are dead.
† Grave of the Fireflies is set in Kobe, which was also fire bombed.
[Edited to specify that Grave is in Kobe]