Not true: https://earthobservatory.nasa.gov/world-of-change/Ozone https://earthobservatory.nasa.gov/world-of-change/Ozone Chlorofluorocarbons stay 50-150 years

Not true: https://earthobservatory.nasa.gov/world-of-change/Ozone https://earthobservatory.nasa.gov/world-of-change/Ozone Chlorofluorocarbons stay 50-150 years in the atmosphere, once they are there it takes a while for things to go back to normal. Hydrochlorofluorocarbons are also now banned pretty much everywhere, replaced with hydrofluorocarbons and hydrofluoroolefins which both have an ozone depletion potential of 0 (zero).