Yup. He did.... that's how they get you. That's why you have to look for the red flags. (Example: blaming everything to one group of people, stablishing one race as superior)
Well I disagree on the example. Not because he has a good speech it means his intentions were good. They use the power of speech to attract people and go on with their evil plan. However, I agree with your point he was an evil lunatic. But he was good in war strategy , and smart to rise like he did by himself pretty much and I have read he was good to his pets. Like Castro. Everyone agrees he was smart. Evil too, but smart.
Never forget that just because we think he's bad doesn't mean he is. Evil is subjective. Today we see it as an atrocity, but back then it was what he saw as the only/best option. Nobody is all bad nor all good. If the best ideas come from the worst person, so be it.
Make Germany rise from the ashes of WWI.
Granted, he did start WWII.