I read some articles and news from various sources that the Arctic ozone hole has recovered. Some people claim that less emission of harmful gases due to covid-19 made this happen. AFAIK, the past few decades regulating and banning emission of CFCs and other harmful gases should have contributed to this.
But Some articles says that polar vortexes contribute to the change of the Ozone layer. It is a fact that CFCs and other ozone-depleting gases react with the Ozone layer and damage it.
My question is for the arctic/antarctic Ozone holes, do polar vortexes contribute more?
PS: This article in the Sinhala language made me ask this question. If you like, translate and read.