Official comment
In the Localization section the examples shown are US style "1/15/2022", EU and most of the rest of the world style "15/1/2022" and year first, "2022/1/15". It's easy to differentiate because there is no 15th month to worry about.
Whenever you publish a date merge field you have a choice of how to display it, including the short month display. The date formatter follows the setting you have in Localization. This image is from an account that has the US date style, "1/15/2022" set:
