World Cup games played at Arrowhead?
https://fox4kc.com/news/how-item-vetoed-by-missouri-governor-will-affect-world-cup-next-year/
I have been to standing room only Chiefs games and the TSC lots were more than capable of handling the demand. I would think out of town visitors would be more likely to carpool or use public transit than your normal MNF crowd of locals. That would lower parking demand, not increase it.
It sounds to me like KC was attaching World Cup to a project hoping the state would pay for a city project.