Well, FYI, Japanese baseball fans say this all the time about foreign players.
Whenever an American guy tries to take out a catcher or a second baseman with a hard slide, they call them barbarians who don't know what sport is about.
When foreign players spit on the ground, toss their helmets or bats, argue with an umpire, they say they're uneducated, and low class human beings.
And whenever those players start to slump, they say it's because of their habits and should be gone.