It kind of checks out that the people that made the first fully functional writing system were also the kind of massive nerds (complimentary) to do their maths in base 60
It does. 0-11 and 1-12 contain the same (12) amount of hours. Saying "twelve thirty two" just rolls off the tongue easier than "zero thirty two" or "o thirty two".
Not to mention zero is a much later invention than the sexagesimal system.