Jake Lloyd as Baby Hitler
What.
Vader is a genocidal psychopath who has killed untold numbers of people beings. He’s a horrible person, he’s the main villain in two films, and his redemption in the last film is seen by the audience through Luke’s eyes. We are happy for Luke a million times more than we are happy for his father.
But if you come at the story from Episode 1-3 first, those fans seem to see everything through Anakin’s perspective. Most or all of those fans like Star Wars and Empire the least in the entire series, because it’s when their little baby is doing things they don’t like him doing. They can’t wait to get back to his redemption. They aren’t happy for Luke at the end of Jedi, they are happy for the guy in the black mask.
It’s a completely different story. One that I would argue is patently false and insincere, by the way.
Was it ever established in the OT that Vader was a genocidal psychopath like Hitler? Sure he was the bad guy and we saw him kill a few people, but I don’t recall any discussion of the vast number of people he wiped out. If anything, Tarkin was that guy.