You're technically correct. However, to a large number of people it not only appears novel, it is ambiguous for ~40% of dates of the year with their native format (MM/DD/YYYY). Even if it's convenient for the majority, it may cause so much friction for the minority that it's not worth using anymore.
My native format is mdy but I dislike it almost as much as dmy.
The ISO standard is great for data exchange, but it's unlikely to change how dates are normally spoken and casually written.