In a discussion about the horror that is the I/P situation

[JoseBalow]

9. You are as legit a god as a leprechaun is, or jesus, or Santa

or any other imaginary creature. God exists as but one of all the other many imaginary creatures man has invented throughout history. Catching a leprechaun is the equivalent of catching a god.

Southpark concludes that imaginary creatures are not real with it's Supreme Court decision. But Kyle begrudgingly capitulates that they are real, in order to preserve the consensus and keep the peace and status quo. He concedes for practical reasons, knowing full well that imaginary creatures (god, leprechauns, etc) are not real; Kyle plays along with the fantasy. Jesus is notably standing alongside the other imaginary creatures when Cartman imagines Kyle fulfilling his obligation to their wager, and is in fact a member of The Council of Nine wisest imaginary characters ever created...

The Council of Nine is a group made up of all of the wisest imaginary characters ever created, lead by Aslan from The Lion, The Witch and the Wardrobe as well as Jesus Christ, along with the Greek God Zeus, Gandalf from The Lord of the Rings, Wonder Woman from DC Comics, Luke Skywalker from the Star Wars films, Popeye the Sailor Man from the shorts of the same name, Morpheus from The Matrix, and Glinda from The Wizard of Oz. They encouraged the "Key", Butters Stotch to harness his powers as a creator to bring back Santa Claus in hopes of making Imaginationland safe once more - their efforts succeeded when Imaginationland was destroyed but Butters recreated it with his mind.

https://southpark.cc.com/wiki/Council_of_Nine_(Imaginationland)

So you are right, reality does prevail in the end, but that doesn't prevent our imaginations from creating whatever convenient reality we choose to believe, regardless. You are in effect a "god", because you can imagine any reality you choose to believe, as those before you have imagined their gods.