Villains are stereotypically older fat queer bald men (e.g. Vladimir Harkonnen). These are all factors people have little-to-no control over.
Media will sometimes subvert those expectations, but most of the time the iconography matters more to the filmmaker than decency. It’s quite fucked up the insecurities these portrayals breed, no amount of positive affirmation will make up for the fact that some natural body types are fundamentally associated with villainy in the Western visual canon.