As a non-native English speaker who lives in Japan and speaks some Japanese (and I'd guesstimate that the majority of foreigners in Japan who speak Japanese are

As a non-native English speaker who lives in Japan and speaks some Japanese (and I'd guesstimate that the majority of foreigners in Japan who speak Japanese aren't fluent in English!) I know what "katsu" is but I would not know for the life of me what "cutlet" means. I even just typed "cutley" and had to look up to correct it! So it's indeed a lot more helpful for me to maintain "katsu" than "cutlet".