Just because I think it’s misinterpreted, they weren’t saying that it’s okay to talk behind their back, they definitely consider it equally bad. It was just a question of categorization, I said that in the US retail staff are definitely rude, they just don’t show it and instead talk behind your back vs to your face, and they said that it’s not rude because rude is specifically being mean to your face rather than when you’re gone. It’s not because they’re a big fan of gossiping generally, or because they think being rude is worse than being mean, it’s just that they always considered rudeness specifically being a different type of meanness partly categorized as being to your face

Kind of how stomach cancer and breast cancer are both undeniably terrible, but they’re just categorized as different bad things in the English language.