As it’s clear Santos lies compulsively, and we know what lies he was willing to have written down (and legally attested to!), it seems likely there’s going to be an endless stream of newly revealed lies he’s told small groups of people at various times, as long as people are willing to share their stories. I mean, he’s still doing it, despite being caught out - it’ll never end.
This is an interesting one, as he was referencing something that was famous enough everyone would know about it, so it served its primary function of drawing attention to him. Assuming he knew it was a flop, its failure also served a disarming function - why lie about it? And also answering the question, “If you’re a big-shot Broadway producer, why are you running for office?” Using this particular production showed he was a big player, an Important Person, but also, at the same time, not so successful that he didn’t need financial help, that a drastic career change wasn’t strange.
Also, it seems like, if your lie is weird enough, it disarms people into not examining it closely. Paradoxically, the less plausible it is (within some limit), the more genuine it seems. (“Why would anyone make up such a strange lie? It must be true, therefore…”) Maybe you don’t believe it, but you brush it off.
