Putin is compared to Hitler because he is like Hitler. You are not honestly asking. This, and the rest of it, has been explained to you countless times before.
Yes, that's how propaganda works. But in the face of new information, that propaganda has to be tweaked or abandoned. To keep hammering the same message produces quickly diminishing returns.
If all source material that you can find is hyperbolic nonsense, then you have made up your mind before looking.