There are some gullible people in this world as well.
How on earth is someone supposed to know details about the Hitler salute and not know that 1. The US was a war with him 2. That he was only the ruler 60 years past.
Not only that but addressing someone as their head of state isn’t a thing. Nobody calls Indians Modi, or British people Sunak.
Your story is either that of a cruel joke or completely fabricated.