Is this a long cliff notes or supposed to be a rehash of entire script? What are the redeeming qualities of listing every single joke on the episode, to entice us to watch it or to save us the time?

The quote was probably meant to be satirical,as the character Biff was a satire. It neither "confirms" nor denies nothing related to Trump… but if you're simply a headline reader, as 90% of americans are, you'll believe it because they said!!!