I phrased that poorly (and have edited it). I don't know if Roberta ever said how she felt on the game being part of canon or not. It wouldn't surprise me if she disowned it, but I don't really know one way or the other.
And you're right, it was a third-person, over the shoulder shooter. It's an important distinction, but it doesn't change my point here.
Ultimately, I'm not trying to say "It shouldn't be canon!" I'm just wondering if it is, because if there was any game in the series that would be struck from canon, it would be MoE. In short, I care less about what the answer is and more about simply getting an answer, regardless of what it is.