That was a good one here in So Cal. Had some incredible fishing right off the coast. My main complaint, besides ignoring a recent historical Ozone transient, is that they now want 100 years (century) to be proven right. We will all be dead by then anyway. Looks like an argument that will never be proven one way or the other by us.
The problem is that these chlorine particles take a long time to filter out of the stratosphere. A noticable drop should be seen in the next few decades, so don't really have to wait a full century.