The example is rather artificial – you already have a big gap indicator when that happens.
Normally like things are paired with like things, e.g. you’re looking at 20 posts from a decade ago. They’re all going to be formatted identically. See one and you’ve literally seen them all.
I am not super opposed to “european” style day reversal e.g.
5 Feb versus
Feb 5, but it’s firmly in the “ehhhh…” category of not enough people caring about it to complain, and the people who do tend to complain about this are, uh, a bit pedant-y. Not just about this minor issue, but about everything. I feel like even if we made that change, they’d just complain about it, like they complain about everything. A no-win scenario.