having to remind myself that a british writer writing a fic set in the US in their native dialect is every bit as reasonable as it would be for someone to write such a fic in, say, spanish
to be clear it is also perfectly reasonable for people from spain to write los simuladores fics in their native dialect. it just has the potential to be really funny also.
presumably people from other anglophone countries frequently have this problem with usamerican authors of fic for media set in their countries