I'm afraid it ain't crap, bro, and it's less about "dumb" sometimes than it's about "unscrupulous" on the part of the occasional politically-motivated prosecutor and the more than occasional greed-motivated plaintiff's lawyer. Since there's no such thing as a "justifiable accident," it's advantageous to them to attempt to paint your deliberate, justifiable shot in self-defense as an unjustifiable accident for which you are culpable.
A trigger that's lighter than what the factory recommends for self-defense or duty -- such as the 3.5 pound connector in a Glock, unless it's accompanied by an NY-1 module -- helps them to sell that theory to a jury.
There's a long thread on it here, http://www.glocktalk.com/forums/show....php?t=1259716
which covers about every aspect of the issue, from both sides of the argument, including my take on it.