A lot of people are too closed-minded about villains (and everything else but villains are relevant).
Sure, relatable villains can be good. But then again, so can crazy ones. Or the ones who are perfectly sane, just evil.
One of my very favorite villain quotes comes from a villain plenty of people say was ruined by it:
Hehehe... That's the face... The face of rage, suffering and humiliation... It's my greatest pleasure... A pleasure only a ruler can fully appreciate!
There's a difference between canon and not-stupid.