Well the idea of being between scylla and charybdis was the ancient greek version of being caught between a rock and a hard place. scylla was a sea serpent that killed many men in the odyssey, and charybdis was the name of the whirlpool that eventually sunk his ship.
In this context, you're getting caught between the negativity that comes with being boring and dull, and the skepticism that comes with telling big lies to appear exciting. The implication is that if you want to appear exciting or interesting, BE exciting or interesting.
scylla
Scylla and Charybdis are both Greek monsters. They both killed travelers. Scylla ate travelers and Charybdis drowned them by making whirlpools.
He chooses Scylla over charybdis because if they go to charybdis they would all die, but if they go to Scylla only six would die because Scylla has six heads and six mouths to eat with.
Odysseus chooses to pass by Scylla because, Scylla will only kill 6 men, one for each head. Charybdis will sink the ship, killing everyone. Circe has also advised Odysseus to do choose Scylla. Further, Charybdis is a visible danger, and Odysseus uses Charybdis to encourage his men to pass by quickly. Finally, passing by Scylla and Charybdis is given as the only way for Odysseus to get home from where he is.
charybdis a swirling whirlpool
Circe
He plugged the sirens ears and avoided the Charybdis
Charybdis was one of two guardians of an ocean. Scylla was her sister, and the other guardian.
scylla
Scylla is not a country, but a mythical sea monster with 6 heads. Opposite it is Charybdis
Odysseus chose Scylla, and lost 6 men to her arms.
You would need two famous people if you want to make a comparison to Scylla and Charybdis. I would suggest Hitler and Stalin.