Earlier quoted context omitted.
Because you knew what they meant and trying to correct them only serves to make you feel good about your own knowledge. You aren't helping anyone when you correct them on this.
I agree. I've learned to not care when people say 'expresso' instead of 'espresso', and 'ex cetera' instead of 'et cetera'. I know what they mean, you know what they mean, and correcting everyone only serves to alienate others.
I stopped correcting people on stuff like this 20 years ago, but sadly haven’t been able to stop myself caring :-/ “Expresso” still grates