Ah, but I do understand.
You can't hate what you don't understand, after all.
It's Bioware who's convinced we don't "get it" 
Well I totally disagree with what you said. Actually, people can hate what they don't understand, it's the main reason why people hate. I'm not only talking about Mass Effect : for everything in life, you'll notice that misunderstanding leads to hate.
I like the word in english : understand. under-stand. A lower level that imply humility. In all the languages I know, it's the same idea in that word.
Take a look at the forum. Where is the humility? People think they can fix a story that doesn't need to be fixed. People think they can say things because they went to university but they actually don't have real knowledge (they sound to be serious for anyone who doesn't really know, but for anyone who works in writing/reading, the "serious one" on the forum are just jokes). They think they know better than the writers what Mass Effect is about. All of these attitude are just pretentious.
So no, these people didn't understand, Bioware is right and they aren't the only one who think that.
I've published things on Mass Effect, the analysis I've made are far more serious than anything on the forum, and they went further than anything I've read on the forum. But in the end, I think there still a lot for me to understand.