@Twilicorn controversy
While we cannot know for certain if Faust's "Twilicorn" comment was legit due to trolls, if I'm not mistaken, she did say that Twilight was going to "succeed" Celestia. Combine that with McCarthy's statement that Twilicorn was in the works from the beginning and the fact Larson wrote the episode weeks after Luna Eclipsed aired and I think it's safe to say we would have gotten our glorious purple overlord (lady?) one way or another.
I must applaud the anti-twilicorn folks for their masterful Xanatos Gambit. If significant changes are made to Twilight or the plot, they can complain about how her character's been ruined FOREVER and the show's jumped the shark (>implying they aren't complaining about that already). If things stay relatively normal, then they can complain about how Twilicorn was nothing but a shallow marketing move to sell toys. Either way, they get to write their blog posts and declare the show spiraling into mediocrity.
Also, can they please stop with the "it breaks symmetry" argument? Not only does it effect absolutely nothing relevant (plot, characterization, world building, etc.) but it's just plain silly and every time someone makes it I can't help but have flashbacks to Monk and think that half the fanbase is OCD.
@Greedy Hasbro
While it's true that their goal is to make money, and they shouldn't be ridiculed for being a corporation, it's also true that just because that's their goal, doesn't mean they always make the right decisions in achieving that goal.
Look no further than their rival Mattel, who, in the height of the tech bubble, bought The Learning Company for three billion dollars, only to sell it three years later for twenty-seven million when the thing became a money pit once the bubble burst.
The only way they'll figure out that this plan of theirs isn't good, is if there's criticism of it, and more importantly, a lose of revenue from it (not buying the toys and going to theaters to watch it). Otherwise, they'll march along in corporate ignorance.
@Derpy Vazquez
There's a massive difference between fan-made media and canon media. The biggest, of course, is canon media is canon. When I see a fanfic or fanart I don't like I simply click the back button and almost immediately forget about it. When canon does something, I really can't just feign ignorance of it. I have to look at it and address it.
That's one reason I really dislike Keep Calm and Flutter On. In future fanfics, I'm gonna have to figure out how the hell to write Discord out of the story so the plot can actually happen. What's worse, is whatever I come up with will only seem contrived and unrealistic but I can't do anything about it because of canon.
In addition, using the "the fandom does it so when canon does they shouldn't be upset" argument means if there's ever explicit sex shown (of course there won't be, but for the sake of the straw man pony let's just go with it), we should just accept it. The fandom has it, so why would you get upset when canon does it?
TL;DR: Just because the fans do stuff doesn't mean it's going to be alright if canon does it. Canon and fanon are two completely different ballparks.
Good lord, I'm turning into Verbose. At least I haven't hit the word limit yet.