I’m inclined to think all of that is made up. This sounds like somebody’s fanfiction. “I met Creative and gave them my ideas and they loved me so much they told me classified information about the next ten years of the theme park and offered me an internship, and naturally I went straight to a forum they pay attention to and leaked everything they told me!” Yeah right…
Putting Wicked in Simpsons is a modern Disney level move. I don’t see that going anywhere except maybe tram.