You are absolutely correct. Freon AKA CFCs were once used as a hairspray propellant and to my knowledge no one was complaining about health issues from it that I am aware of. CFCs were of course replaced with HFCs which break down more quickly in the atmosphere before they can reach the ozone layer. The left has a schizophrenic view of Ozone. It is considered a dangerous pollutant at lower levels in the atmosphere. However ozone in the upper levels of the atmosphere must be protected because it filters out UV radiation.
The Ozone “hole” over Antarctica was first discovered in 1985 but it is now known that it is a cyclic phenomena that most likely started long before people began using CFCs. It's size seems to have little if any correlation with the release of Freon into the atmosphere. None of the extreme claims that were made to scare politicians into agreeing to the “Montreal Protocol” in 1987 came to pass. By the early 1990s long before the “Protocol” had any effect on the amount of Freon being produced or released into the atmosphere the “hole” had shrank significantly. The thickness of the “Ozone layer” has varied little. The measured level of UVB reaching the earth's surface has not had any statistically significant trend at all.
Al Gore in his 1992 book “Earth in the Balance” claimed that because of the Antarctic ozone hole, “hunters now report finding blind rabbits” and “fisherman catch blind salmon.” This was all shown to be nonsense, so he doubled down on a new hysteria in his book and movie an inconvenient truth.
Strangely enough one of the biggest proponents of replacing CFCs with HFCs was Dupont whose patents just happened to be expiring.
I fully agree with you, before I retired from corporate life I worked on the Stratospheric Ozone regulation in concert with the EPA as part of the EIA. Chlorinated solvents are the worst actors in the Halogen group of Chemicals. They have and were far reaching in use. At the start the EPA did not include the paper industry, or the cleaning industry. Yet, before they were done chlorinated solvents were deleted from use in all processes of manufacturing.