Regarding the possibility that the truth will be forgotten, that has reminded me of one of the most poignant paraphraphs I ever read in a fantasy story, in one of the Appendices to the Lord of the Rings:
"There at last, when the mallorn leaves were falling, but spring had not yet come, she laid herself to rest upon Cerin Amroth, and there is her green grave, until the world is changed, and all the days of her life are utterly forgotten by the men that come after, and elanor and niphredil bloom no more east of the sea."
If I read future accounts of the events of DAI, they will likely make me feel similarly sad. If it wasn't apparent until now, I really like my main Inquisitor. None of my other characters in Bioware's games became so real. Only the Warden came very close.