Xin! As the original artist succinctly put it, "This little fella saw the Empty Throne of God and decided to found a sex cult about it!"

Or, in actual canon talk, Xin's Euphorics virus taught him things about the universe that he wasn't supposed to know, and that new information drove him to the absurdist end of Resonance; connect to as many people as possible on his own terms, whether they like it or not. And to empower others to do the same, to their own desires.

Because no one's watching anyway.