In order:

1) "Shoved down everyone's throats" meaning "got popular quickly which people didn't like", it's not the fandom's fault for liking something so much that it shows up everywhere, the people who didn't want to see it should learn how to be a functioning human being and ignore things they don't like. Also? A countless number of people legitimately got into the fandom simply because it was "shoved" down their throat.

2) Has much more to do with the fact that the people who did this were already around and moderately popular in the SJW circles of Tumblr, where pretty much all of this happened. It's not the show or the fandom's fault that so many Tumblrettes have latched onto it.

3) I've said it before and I'll say it again, nobody from the UT side of things would have gloated nearly as hard as they did if the people who were actively campaigning against the game didn't go out of their way to stamp their feet and cry foul first. The celebration may have gotten out of hand, but the people who we're supposed to feel sorry for were just as guilty as the UT fans were, and would have gloated twice as hard had they gotten UT to lose in the end.

In order:

1) It was kind of shoved down people's throats, and the fanbase (at least the very vocal minority) wasn't helping things at all. And the "don't like, ignore" rhetoric is older than the dinosaurs-- I imagine some were looking to get indignant about MLP, but there must have been also some who just couldn't avoid it because of how ubiquitous it was, and it WAS certainly ubiquitous, in large part due to both the normal fans and fanatics.

2) Of course it's not the show's fault-- nobody's making that assertion. And nobody's saying that it's the fandom's fault, because that's an empty point, given that said Tumblrettes ARE part of the fandom to begin with.

3) >The celebration may have gotten out of hand

And that's practically it, really. You can't say that it's only possible to feel sorry for one side and condemn another-- it's perfectly possible to call out both sides. That refutes nothing about the behavior of the UT fanbase. And I'm saying this as someone who has no investment in this situation because this is my first time hearing of it.

But if what you said is true, and the other side cried fowl first, then the UT fanbase isn't necessarily at fault. I mean, you can't expect a fanbase past critical mass to react in a controlled manner.