You're not a real Star Wars fan if you haven't seen the 1978 Holiday Special. Although, honestly, if you had seen it back in the day, it's more likely that you wouldn't have stayed a fan. A nice documentary film about the so-called worst TV show ever, if we exclude the fact that television in the 70s of the last century was mostly at the level of such and similar achievements.
It's not a question of whether the "Star Wars Holiday Special" was a failure, it certainly was, when George Lucas himself disowned it. After all, the whole franchise has always been more of an industry for the sale of children's toys, than a serious sci-fi, driven by an idea, unlike some other series. But as bad as this incriminated special was by all parameters, it is not worse than the Disney sequels that we got this century.
On the other hand, this year we received an interesting documentary film, decently directed, fairly measured, with interviews and TV clips quite tailored, with the aim of a very realistic description of this kind of disaster. There are also reviews of the animated short and the Jefferson Starship performance, which we may or may not like. It is interesting to mention the missed opportunities for Cher, Robin Williams, and even Raquel Welch(?) to appear in the special.
It is also interesting that the question of the importance of editing was raised, which certainly contributed to the debacle of the special. Allegedly, the original film "Star Wars" was also saved in the edit, about which you can find more information on the subject on blogs and YouTube.
Will such documentaries be made and about all the failures of this serial in Disney's production in the future, I really don't believe, because they are not even worth this much mention.