I agree with you which is why the U.S. Supreme Court has said the press have a First Amendment protection to publish lawfully obtained info - even if they are trade secrets. The wrinkle in this matter is that Gizmodo paid for the device and it has a long-standing policy of paying for info.
Everyone needs to read up on what happened several years ago when Apple sued Think Secret - remember that site? - for allegedly publishing trade secrets. Ultimately, that case was resolved with a settlement and the legal issues were not settled in court. However, it was clear to legal observers that had it gone to a judge, he would have ruled in Think Secret's favor if he concluded that Think Secret, a site run by a college student, qualified as a news organization. I don't think anyone dispute Gizmodo is a news operation. The wrinkle is their payment.