Yes, of course that's true. But I have found that quite a lot of people start to recognize this when they understand the mechanisms of manipulation and then consciously pay attention to them. And I'm only talking about media manipulation.
In my case, I can hardly watch or listen to a news program without shaking my head. No matter from which side or from which country...
And I think your description of the mechanisms of deep indoctrination is very good.
I started thinking about this topic years ago when I read Walter Lippmann's Public Opinion....