I disagree with this characterization. It’s not that reading Mein Kampf would brainwash you, it’s that reading it for it’s “nuggets of wisdom” is an insane, dangerous thing to do. I sorta thought that part would be uncontroversial but who knows
Considering his lack of success and the fact that he had better military thinkers as subordinates, looking for "military wisdom" from Hitler sounds like the kind of thing you'd do because you had an ulterior motive.