You're missing the point entirely. The parent post wasn't saying Hitler is like Trump and Putin, but rather uses them all as examples of charismatic political leaders.

> Holy crap some people are truly indoctrinated by their ideologies to the point of no return.

This seems like a rather extreme conclusion to jump to.

That said, Hitler is about as close to the personification of pure evil as you get in secular society. So it's an inept analogy.