Censorship is censorship.

I should think learning about history should lead to a desire for citizens to be able to quietly make weapons at home given the many documented cases of governments across the world mass murdering their own citizens (or foreign governments invading and genociding). What's the point of telling people the wrongs of their oppressors while simultaneously disempowering them from doing anything about it or preparing to defend themselves in the future?

So yes they're not just comparable, but two sides of the same coin.