If Linda Ronstadt had a contract the specifically disallowed political grand standing she had no business breaking her contract. If she had no such stipulations in her contract then she has every right to speak her mind.

BUT....If you give your word about anything and then break your promise you devalue yourself and the strength of what ever cause you are speaking for. No matter how righteous the cause or elpquent the voice.

I look at Michael Moore the same way I do Woody Allen,

"Still waiting for the funny, Still looking for the art."

As to whether Michael Moore is a great American Patriot, I doubt it.
He is no Ben Franklin, Robert E. Lee, Eleanor Roosevelt, Gerald Ford, Phil Ochs, Morris Dees or a few others I admire and could make a good point about their Patriotism.

Don