It really depends on the character, IMO. Like Superman or Batman or Black Widow better be at least fit as hell, because their characters are fit as hell and are supposed to be much more capable than the average person.

Not that they should be super unrealistic, either. Like Christian Bale as Batman was totally fine. He doesn’t have to be a meathead or gymnast, and neither should Black Widow. Though, with that said, it would be cool for Hollywood to hire more actually fit women than every woman being a pretty twig… Black Widow and Batman probably should have gymnast level builds if they’re to truly be realistic for the physical feats they pull off.

Though every other “normal” character? Yea, hire some chubby and “ugly” people too for crying out loud. Some shows do well with casting, but damn.