As a Japanese American, I personally don't view it as racist. It's not unusual to have a specific style of art associated with a country/region if it's stylistically different/unique. Like how there's African music, Carribean music, or French Films. You don't see a lot of drastic distinction in the art from the Anglosphere to need these labels to separate which English speaking country it came from, especially when you have certain products that feature people from multiple English speaking countries. The accent in some cases can be an indicator, but since you can train people to take on another accent, nothing changes if you have a British film star an American actor putting on an English accent, just look at Bridget Jones.