This is one example of why I don't pay attention to cogitator's posts anymore. Frankly, he does not appear to be an honest broker of information. If he were, then he might have noted that the ozone hole grew to a record size in 2006 which was years after the CFC ban was put into place and half a decade after CFCs apparently peaked in the atmosphere above the Antarctic in 2001. Of course, cogitator will respond that it takes years for CFCs to breakdown, but someone with a little intellectual curiosity might at least wonder about the theory given that the Antarctic ozone hole has grown to a record size years after CFCs were banned.
I don't pretend to be an expert on this subject, but I find it very curious that there has been hardly any discussion in the media about the record ozone hole that occurred in 2006. Presumably, if the size of the hole was the problem, then the record hole that appeared in 2006 should have set off alarm bells allover the world. On the other hand, given that we apparently didn't start getting accurate measurements on the size of the annual Antarctic ozone hole until the mid-1970s, maybe scientists are becoming a little more humble in their attempts to explain how events such as the annual Antarctic ozone hole actually occur.
"The Antarctic ozone hole's recovery is running late. According to a new NASA study, the full return of the protective ozone over the South Pole will take nearly 20 years longer than scientists previously expected. ... Scientists from NASA, the National Oceanic and Atmospheric Administration and the National Center for Atmospheric Research in Boulder, Colo., have developed a new tool, a math-based computer model, to better predict when the ozone hole will recover."
Rather than accusing me of dishonesty, if you have a question, JUST ASK. (There's also a thing called Google; I found this with 30 seconds of searching on the three words "ozone", "hole", and "recovery".)
Regarding 2006: NASA and NOAA Announce Ozone Hole is a Double Record Breaker
"The temperature of the Antarctic stratosphere causes the severity of the ozone hole to vary from year to year. Colder than average temperatures result in larger and deeper ozone holes, while warmer temperatures lead to smaller ones. The NOAA National Centers for Environmental Prediction (NCEP) provided analyses of satellite and balloon stratospheric temperature observations. The temperature readings from NOAA satellites and balloons during late-September 2006 showed the lower stratosphere at the rim of Antarctica was approximately nine degrees Fahrenheit colder than average, increasing the size of this year's ozone hole by 1.2 to 1.5 million square miles."
(Stratospheric cooling is caused by global warming. Check Google to confirm.)