> I wonder what would have happened to the Ozone Hole if it too got politicized at the time,

It did, and a large number of people on the Right took attitudes exactly like the Right takes on climate change today.

That faction was somewhat weaker within the Right at the time, and the Right somewhat weaker overall, so the political resistance to the science wasn't as successful in preventing federal policy action as it has been in the US on climate change, but the same overall shape of political dispute occurred.