Im not saying these are problematic, just what others have seen as problematic. They are themes that are part of the story and character. It is silly to point them out as problematic, but people are silly.

There’s the general sexism present and the objectification/sexualization of Fio. These are both appropriate for the time period and pivotal points to the character development. You have Porco going from believing a girl can’t possibly help rebuild his plane to him fighting off a bunch of guys who can’t see past her as nothing but an object.