Actually, it *is* in dispute.
While we can *model* such, that doesn't mean it's happening the way
the model says it *can* happen.
And it's also in *much* dispute that the holes are anything other than
a natural thing hat we've never noticed before simply because we
havn't been monitoring the ozone levels for very long.

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Ok so it's possible that freon doesn't affect the ozone layer, on the other
hand it's possible that it does. There's suitable substitutes so why chance
it? It's possible that excessive UV has nothing to do with skin cancer, or
that smoking has nothing to do with lung cancer, or that living off nothing
but fast food won't make you unhealthy, but there's quite a bit of evidence
to the contrary, why chance it?