You clearly see the Great Lakes and the eastern shoreline of North America. That is Earth, no question.
Unless you are suggesting some other planet has a continent identical to North America on it?
I see lakes. And something that might be Terranova but the surroundings don't quite look the part. "Clearly" seems rather hyperbolic.
But even if it is, that doesn't mean the Ark will be leaving from Earth. Those ships hanging about don't look like the Ark(s) to me. It might be some kind of recap of the battle of Earth or something else along those lines.
But even if it is what everyone's complaining about... I've already said it a few times, but the ME series functions on contrived plot twists and retcons. If you're looking for clever plotting or consistency, you've come to the wrong place. Really, I see people around here expecting a bunch of stuff that ME has never been known for, just because.