Yes, we know that Ted Kennedy (aka "The Evel Knievel of Chappaquiddick") is a pusillanimous toad who killed a woman with his total lack of backbone, and that his car has killed more people than Dick's pansy little 28 gauge shotgun has.
Yes, we know that wandering downrange during a quail hunt isn't the brightest thing one can do while upland bird hunting.
The fact remains that Cheney committed an egregious Rule Four violation. By all accounts, he's been a mensch about it, but it still happened.
Stating as much does not imply a desire to run out and join Al Qaeda, or a defection to the camp of the moonbats who oppose the Glorious Maximum Leader.
That is all.