They could be from Canada too. We’re in that fun zone of being mostly Oxford/metric/DMY, but due to proximity and history we still use a lot of Webster/imperial/MDY. My dad is from the past so he speaks in Fahrenheit but calls it “English”. Send help.
However, saying “July 23rd” feels more natural and efficient to me than “The 23rd of July”. That translates to me writing 07/23 over 23/07. To each their own though, I’m not gonna harsh any mellows over date formatting.
Coming from somewhere with the format the other way around, we do indeed say “23rd July” without all that extra fluff. So exactly the same efficiency wise. We simply count days like we’d count other stuff. For example I definitely didn’t had my coffee fourth just now.