It’s not that it’s unbelievable. Being believable is what makes for effective government communications of this nature.
Magic words like “bunker bombs” and “stealth bombers” invoke a sense of strength and security and definitiveness. See Edward Bernays’ techniques for how it’s done but it gets in our heads since we want to believe, we do.
But all we have to work with is holes, strong marketing words and a promise of “the government is being honest with you”, which sometimes is all we have to go by.
But or now, because I’m hearing conflicting reports from ham radio operators operating from Iran (illegally – you can find them on X) – giving word-of-mouth reports that conflict with “America-Is-The-Best” messaging, I am going to keep an open mind for now.