Legally, sure. But if all of Lucas' fans ignore that the force comes from midichlorians, does it really matter what the "official" word says? The "official" word is in this case effectively eliminated by fan opinion, and a new form of canon, mandated by fans, has arisen.
Fanon, made by denialists who think they have some higher authority then the series creator.
I don't like the whole "midichlorians" bs, but I'm not so arrogant to think myself better then the series writer.
It's HIS story written by HIM in the way HE wanted. You can't claim his version of a story is "wrong" besides it's HIS story. That's like saying a company made a chair wrong when they had planned to make it that way from the beginning.
In TES, the fans (or, more accurately, a select but shifting group of lore scholars) is in charge of working out all the contradictory information and gaps that Bethesda leaves by accident or by design, and, since Bethesda doesn't themselves have an official word on the canon, the fan's version is as close of capital T Truth that we get. You can choose to deny that, but you're going to be in a small (though admittedly vocal) minority. Most of us don't care about the "official" truth, we care about an interesting world and a cohesive universe.
The closest we get to official truth is anything that stated in games
The supposed "plot gaps" and "errors" are caused by something called Retcons, something few ES fans seems to have a understanding of. It was said that Cyrodiil was a jungle, while in Oblivion is was shown not to be. This isnt a "error" its a Retcon, Crydiil was never a jungle because Bethesda changed their mind, as is their right as series owners.