Firstly, I don't speak for Sun at all, at all... I have never talked to Sun legal about the CDDL - so there aren't even lines to read between. I have no special knowledge, bar a modicum of knowledge of the internal culture.
Your long post is interesting, and I agree that Linux contributors can not incorporate GPL-incompat code because of GPL licence concerns - presuming they can not agree to allow themselves to do so. To be clear: at no stage have I argued that point, and I have no interest in discussing it.
My main point here was to counter the FUD that Sun would sue for CDDL infringement.