Alright, I think I should weigh in on the situation.
To the people who want to change the ending: Don't you think that, if you liked the series to this point, one 10 minute scene that you don't like is fine? Sure, it's the end, but isn't it more about the road you take than the destination? I remember Virmire, loyalty missions, and all those great scenes throughout the series WAY more than I remember the ending of each game. Nothing can be perfect, and, rather than asking for this game's ending to change, why not suggest that BioWare not make this type of ending in the future?
To the people who hate the people who want the ending changed: Don't you think that they, as consumers, have the right to criticize? While it could be done in better ways, isn't it better to ask to improve flaws than to say something is perfect? I personally believe that's the only way to reach perfection. While you may not agree, I still think you should try to see from everyone's perspective.
To the people who hate team B: Don't you think that the way you tell them off is a bit wrong? Shouldn't you instead express your own ideas, rather than try to call them "pretentious?" They believe in "art" in a different way than you, and "art" is something with no true meaning. Some view it one way, others another. "Art" is entirely based on opinion, and, while I'm not saying your opinion is wrong, I AM saying you should express it differently.