This really does settle the questions about Barr. He is full of shit and a Trump toadie. He (Barr) lied to everyone about Mueller's decision making on whether or not policy played any role.
My conclusion: Mueller's statement of clarification is too complex, too "wordy" for the....well, typical Trump supporter from his base to be concerned about. Those folks want to hear Trump's take on it, they want it explained to them in the simple spiteful hateful terms that Trump is so proficient at. Which means, they're not going to get the truth, facts and accurate interpretation of what Mueller expressed in his on-air statement. Nor would they ever want to if it makes Trump look bad.
Barr is going to glide right past any unscrupulous disingenuous acts he committed in support of Trump simply because it doesn't matter what he says or does so long as Trump approves of it.
This whole insane symbiotic relationship that Trump has with his base is a closed repeating loop where each feeds on the other's feelings for confirmation of "legitimacy" that's completely devoid of fact and reality.
As an aside, I'd be very interested in what Trump has to say about Mueller's statement.