Only for his speaking.
Go to youtube and watch some of his early speeches with subtitles.
When you know the words he is speaking, in context, and his gestures...exaggerated as they were...he WAS very impressive.
Even now. In the context of what happened.
His early speeches were the most histrionic. I’ve seen them. Sometimes he seems to be having an epileptic fit, grimacing, throwing his arms up, almost weeping. He would really wind the Volk up in the beer halls. Granted, as he gained more experience he learned to moderate his outlandish body language.
Ja, I’ve seen Dolph the green orator in his Landsburg prison/Mein Kampf salad days, and they are almost comical.
Anyone speaking like that today would be laughed off stage.