It's true though, it was innocent random shit and then they wanted to seem deep and intelligent and found every little thing they made in the past seasons and made it deep fucking lore.
Pinata guy and punch bowl guy? They're PB's relatives turned autistic by retard juice.
Gunter being the most evil being Hunson has ever encountered? A fact, because Gunter is now an eldritch abomination from before there was anything. He's just a penguin because he got walalalallaLALALLALALA'd while entering the earth's atmosphere.
Simon stole the jewels for his crown? True, but not the way you think, as really an old humanized dinosaur and a whatchamacallit stole them from some creature to create the magic crown, and after being mind fucked by the crown, Ice King thinks he did that stuff!
Jake has magic powers not because of fantastical candy land logic with an off-hand retort about a magic puddle, he was actually the result of his dog dad being bitten by a space dimension hopper alien and coming out of his dad.
All that shit strewn around in the theme song, and in the background? REALLY THE ENTIRE FUCKING WORLD IS POST-APOCALYPTIC, those aren't random ruins, they're deep fucking lore from a thousand years ago.