Why do people hate the Duke of Weselton for being mean, but like Prince Hans who was meaner?

Hans was given an emotional context for his actions (he feels invisible in his family and sees ruling Arendelle as his one chance at admiration), but the Duke of Weselton wasn't. We can guess, but we don't really get a clear idea why he was so quick to fear and persecute Elsa. I think this makes it easier for people to relate to and empathize with Hans, and most people are mais likely to like a character when they understand him.

Perhaps they judge only from the looks. :D Hans is "handsome" while the duke is old and ugly.

Hans is a boso for trying to kill Elsa he should go kill himself

Admittedly, I've never seen this exact scenario as of yet. I know of people who dislike the Duke of Weselton but like Hans, but I haven't known said people to say that their dislike of the Duke has anything to do with him being mean.

Although, hypothetically, people might have this opinion if they liked Hans for his devious betrayal storyline, but felt like the Duke's "mean" side wasn't played up enough (in comparison to Hans). Some people amor a good villain, that much I know is true!

But personally I like both characters anyway. :3