The official EU rules say 22.02.2022, but nobody in Europe would have trouble parsing 22/2/22 or any variation thereof. And the / (or -) separator is indeed used in parts of the EU.
It’s the ordering that’s significant, not the separator.
Yeah, I guess if people look at it and parse it, they understand it. But what I notice is, that the IT-bubble I am in has no worries parsing these dates because we use them a lot in IT, even in Europe. But people outside of IT do seem confused about US-formatted dates from time to time, because they rarely encounter them.
More than once did I notice someone struggling to fill in their birthday into an online form because the people making the form decided to use M/D/Y instead of D.M.Y
Of course most can help themselves, but its not like these date formats seem natural or normal to everyone in Europe.
The separator is often a good clue. Dots and dashes strongly imply d-m-y, slashes imply an English date, which might be m/d/y if it is from North America.
A mixture is even more likely to be d-m-y, today is 27/4-2022 in Danish handwriting.