The return of the ozone hole

NASA measurements of the Ozone Hole (OH) over the Southern Hemisphere do not support the claim that the Montreal Protocol, which banned the emissions of ozone destroying substances, had an effect on the OH
- OH is bigger now than it was in the 1980s
- OH remained large since 1992 pic.twitter.com/eVMKPYqyiZ

— Ned Nikolov, Ph.D. (@NikolovScience) February 22, 2023

Well, I wonder if that is true.

I have seen some similar claims in the past but their sources seemed suspect.

To a first order of magnitude, virtually all public policies fail.  I thought that the global coordination to reduce ozone gases in the Montreal Protocol was one of the few successes.  Sounds like there is at least some data that suggests that it did not make a difference.