Most fans just aren’t very interested in the history of Star Wars, real or fabricated. If they are, they’re probably content with Empire of Dreams or I guess Wookieepedia. I feel like if there was greater interest, his revisionism would be more well-known as well, or at least more people would notice the discrepancies.
At the very least, a decent number of people have seen Vice’s documentary, which does at least cover the real history, if not call out the revisionist claims. Though it’s still a comparatively small percentage of the fanbase, unfortunately.