he was right, he was also an asshole though.

those ain't mutually exclusive

His motivation wasn't to free the townspeople from a horrible autocratic aristocrat, it was to prove to the townspeople that he was a worthwhile individual by indiscriminately killing something.

I think you forget about the whole scene where Luke empathizes with his father at the end where he's about to die. Not to mention the entire of the prequels where it shows how Anakin was a good dude who had suffered so much, and that's what eventually drew him to "the dark side".

The Pure Evil Villain does have a lot to recommend to it.

Did Marvel really have a lot of those? I think the main issue is they had too many villains, period. Most of which aren't misunderstood, merely forgettable. Hero's Journey + Scary Villainous Antagonist is not the only story template out there.

The problem is most marvel movies aren't trying to tell a meaningful story with (inter)personal conflict and character growth, but to move their characters along from hijink to hijink using rote storytelling techniques.

There's nothing wrong with having a BBEG, or a nuanced villain, or even a morally correct antagonist that is only pitted against the protagonist through happenstance. There are Great stories that use all of those tropes. The only relevant question is what story is being told and which antagonist best helps move it forward.