Not sayin' it's why, but if you have ever had the misfortune of being sued, esp for bullshit reason, you might choose not to get sued in the future. Saves a lot of unnecessary, life-sucking, all-on-land pain.
So, hypothetically, if someone threatened to sue me (wait, no, wasn't me, I swear) if I published something, I might say Life is too short for yet another courtroom appearance, fuck it, let's go sailing. Also, I might choose not to publish embellished bullshit, figuring silence is better. Although I still like the news channels' trick of asking questions. The Subliminal Anchorman asks.. Is it true that the President is from Mars? Yeah, Man, I heard it on the NEWS I tell ya.