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I'm just a silly engineer, I look for the obvious things first. Freon (C-Cl2-F2) has a molecular weight of 68. This is relatively heavy, when compared against other gases or particles.

For example Carbon Dioxide (CO2) has an atomic weight of 22, so one could expect to see that in ozone (O3) - which has an atomic weight of 24. We do not see a lot of Chlorine Gas (CL2) which has a weight of 34 or Sulpher Dioxide (SO2) up there, and that has a weight of 32.

But, Freon is a very stable molecule, and weighing in at 68 - I don't understand how that makes it up to the Ozone layer (though the troposphere, through the stratosphere, let alone into the ozone layer - over 100 km above the earth.).

Then we have this little gem:

The ozone layer absorbs 97-99% of the sun's high frequency ultraviolet light , light which is potentially damaging to life on earth. Every 1% decrease in the earths ozone shield is projected to increases the amount of UV light exposure to the lower atmosphere by 2%. Because this would cause more ozone to form in the lower atmosphere, it is uncertain how much of UV light would actually reach the earths surface. Recent UV measurements from around the northern hemisphere indicate small UV increases in rural areas and almost no increase in areas near large cities.

NASA Link

As you know Hodar, O3 is very unstable and wants to react with almost anything.
But,as y'all have noted, there's NO way for Freon to get up high enough to react with ozone. So why the fuss about it?

I learned this little gem of information from an AC systems man back around 1993:

Dupont was the inventor and patent holder for Freon. However, patent rights don't last forever, and Dupont's exclusive rights for the production of Freon expired in the 1980s. Once they did, many other chemical companies began making freon and, of course, the price fell dramatically.

At that time, some research studies were conducted to see if Freon posed any environmental threats. IN LABORATORIES, the researchers found that Freon readily reacted with O3! (Gee, what a surprise!)

The researchers then recommended to the EPA that Freon be banned because it posed a threat to our planet's UV defense layer. Fortunately, there was a newly invented substitute refrigerant available that could replace all the freon systems.

Guess who owns the patent for the new refrigerant!

Yep,
DUPONT

Ya wanna bet who funded the research??

This was a classic case of corporate market manipulation using the EPA. The Econuts swallowed hook, line, and sinker!!! LOL!