That's what some folks on Reddit were saying, but knowing that runners get park passes, wouldn't Disney have reduced the number of available MK and general public reservations to make the total a manageable number?
Some commenters said that it wasn't so bad inside
Disneyland, that the big problem was DCA closing at 9:00 and the Esplanade being jammed with people trying to move over to DL with not all the entrance turnstiles being open.