Frankly, I'd be interested to find out if the cosmic rays, the absence or presence of which seem to be a major force in the warming and cooling of the planet, are also having an effect on the production of ozone in our atmosphere.
Small wonder that there is a hole there, and it grows larger in their winter when the S. Pole is tilted away from the main source of UV-light.
(There are none so blind as those who refuse to see.)