No it doesn't.
Exactly this. For one thing, your "super powered angel thing" exists nowhere but your wildly overreacting imagination. Two, it could not be andraste, it could be the dead Divine(it could be some random spirit, it could be flemeth for all we know). And third, if it was andraste, how on earth would that invalidate the rest of thedas's mythology? If one sect if real, so could the rest. In fact, we have evidence that the old gods could grant magic powers to their followers(ala corypheus) and no ones losing their **** saying that old gods are completely true and the only option. So calm down and wait.
On a side note, are people really believing that we'll get titled the "herald of andraste" without any input awhile having zero options to disagree? Really?
PS: first human inquisitor is being named Harold now, thanks to those who came
Up with that