Not necessarily? Buena Vista Street? Grizzly Peak? Cars Land (Route 66 and car culture)? Pixar Pier (Boardwalk roots but Pixar screwed that up). You can argue that Coco coming in celebrates the Hispanic heratage that came into play with California’s upbringing.
The only real outliers are Avengers and Avatar, but I don’t think the park is that far gone from its original theme. In fact I would argue it’s a little more “in tune” with the theme that you think it is. DHS is kinda like that where the core of its theme celebrates Hollywood Studio/entertainment and using it as a IP hodge-podge. Staying from the theme? Sure, but to the point to where it needs a total makeover and a name change? I would argue that would make even more of an ip hodge-podge. I say leave it as is.