Where did you find this ? This is just plain wrong.
Airparif is a collection of people involving regular people, the local cities, major polluters etc. https://www.airparif.fr/airparif/missions-dairparif ( unfortunately in French)
It’s funded 24% by the state, 24% by cities, 27% by large companies including the polluting ones,20% by selling what they produce/know how etc.