"If the science holds up."
That is, of course, a big "if." But I'm more than willing to admit I'm on less-than-certain ground. Too many scientists and political types on the other side aren't.
It's entirely possible that there's something different about the chemical reactions out in the wild than in the laboratory. It happens. All I know for sure from my own observations of the data is that the chemicals are going away, and the hole isn't.
Someone using simple common sense, and realizing that the Earth's temperature is, in fact, slowly rising, might wonder if maybe the hole is simply caused by some temperature or solar-related phenomenon.