Then you’ve never bought imported food or never got food gifts overseas. Or never travelled to a country that used the format that you don’t use.
For example, 06/09/2023 could mean either you’re eating something that expires next month, or expired two months ago.
I actually got a notice like this several months ago even before YouTube did theirs.
If anything, Facebook’s quite infamous for trying to combat and blockers in general. I remember back then when they obfuscated their web layout so much that it got tricky for some to filter or block sponsored or recommended content.