I’m pretty sure that “oh, shoot, things got wonky… toss a 13th month in here real quick” is due to people trying to force months to fit weeks.
It’s the opposite of what I was saying about the role that months play in timekeeping & how they work.
ALSO, the same can be said for weeks & leap days… so if it’s a point against months, it’s just as much a point against weeks.
It’s like in Unpretty, that 90s song by TLC: