None the less, that would still have to be a very big typo. In fact, the year of birth system is designed to make it simpler and easier than typing in your full calendar date of birth. How can anyone accidentally click on a date that is several clicks down from their actual birth date? I still think it's a clever 'mistake' though, to create a diversion for King Blozo.
Could be the same reason people make spelling mistakes, or have sticky mouse buttons.