Ed writes:

That's precisely the question we've been trying to answer, and the two points of view are:

The Democratic Party of the US, along with the Clinton EPA and the UN's climate panel (IPCC) say that "nearly every expert" accepts the GW theory (which William also supports).

Others, like Bush (a politician); Lindzen and Balunias (scientists), Singer and Seitz (retired scientists) that that "less than half of all experts" accept the GW theory.

You've drifted off-topic, Ed. We're not talking about the GW theory in general. We're talking about the claim that "CFCs with lifetimes of decades and longer become well-mixed in the atmosphere, percolate into the stratosphere, and there release chlorine."

In fact, I hadn't realised we were dealing with CFCs. Is this even relevant to global warming? I still don't even know what article we're talking about. Anyway, my point here is we're talking about a single claim, not entire theories. Even if theories are disputed, single claims relevant to them need not be.