(free to use in the comments)
That, and the cast and crew behind MLP FIM have since moved on, so forcing them to rewite season 9 because "BOO HOO, GROGAR WASN'T REAL AND TWILIGHT SPARKLE WILL OUTLIVE HER FRIENDS!" would not only be expensive, but there wound be a lot of angry parents who will call you guys whiny manchildren because you guys didn't get your way!
It still urks me that you guys sent hate mail and death threats to Jim Miller for something that was out of his control after the series finale and epilogue leaked online from a streaming service in the Netherlands, I hope you guys get banned from every brony convention.