There’s a great line in the 3rd Indiana Jones movie about goose stepping morons who should be reading books rather than burning them. You could replace banning with burning and get the same result – A deliberate suppression of knowledge and a concerted effort towards ignorance., usually for the purposes of exercising power over one or more groups of people. You can dress up the justification however you like, but the motivations all tend to refine down to that.
This article speaks to something slightly different, a modification, a softening, of history rather than the complete eradication of it. It eventually achieves the same end, but it does so under guise of a kindler, gentler master. I have no problem with The Boy in the Striped Pajamas as a launch pad for talking about the real thing, it does an excellent job of leading to greater discussions and learning, but it isn’t history. And as certain groups, political leaders and States quite literally move to outlaw the teaching of the real thing, I think it’s an important conversation to have.