The community would still be outraged and many people will mistake it for canon, as for Uriel that wouldn't be really entertaining because before Jagar Tharn his reign was very boring and the rise of Tiber would be too long and near impossible due to the amount of conflicting lore, not to mention it would show how much of a dike Tiber Septim was.
They managed to make a film of Alexanders rise from pretty much childhood iirc, and portray him as a dike. Would ot really hurt to have a fim that clears that lore up? It's not like it's the Dwemer.
The main quests of TES games are linear and non race related anyway.
Redguard was different, it was meant to follow a already made character and was meant to tell the story of Cyrus.
I think he knew