When a Large company, for this definition and example Disney Company, buys a franchise of really any type and Ruins It Completely. Star Wars episodes 8 and 9 are So Bad that Most fans think that Disney Ruined the franchise according to the available Canon, which is a term used for historically defined rules, creations, or otherwise established world-building used for the universe being presented. Disney, also for an example of the "Disney Cannon," Arbitrarily decided to "decanonize," or make Not Canon Anymore, Most of the old material because "it is inconvenient for the current material, "that were, again, So Bad that their Own Materials even Broke their Own Established Canon.
So, for this example, the company Allowed uneducated people Of the franchise lore to take the "Disney Cannon," and make Arbitrary decisions Without Democratic Acceptance of the materials, that largely breaks, or makes incomprehensible, the content that the franchise has established as a whole and especially to the franchise's Established Canon.
Cannon is in reference to the blunt, destructive power of unregulated and unchecked misuse of power in Control of a Largely accepted artwork that can be seen as going Against the wants, hopes, and desires of the loyal fan-base.
Friend 1: "I can't believe they made money off of this film. There must just be So Many people that are fans that even seeing the movie 1 time at 15 dollars will make them close to a Billion dollars."
Friend 2: "Yeah, the Disney Cannon blew a gaping hole in the franchise and I am not sure they can even recover. I'm not buying their 40 dollar blue ray That's for sure."
Friend 3: 'I guess that Proves that you can cut the nose off the Mona Lisa if you can afford to buy it. the Disney Cannon really made a mess of things."
Normal Person with Negative Opinion: "The Rise of Skywalker is one of the Worst films I've ever seen. Can you believe how bad it was?"
Adversary to the Social Consensus: "You are a Sexist, a Misogynist, and a Racist for having negative opinions about this exceptional film with strong people doing their best."
Normal Person with Negative Opinion: "Looks like I've been hit by the Disney Cannon!" *Que Laugh Track*
Man: "I can't believe they've destroyed the established canon, over 30 years of great content, so badly and made so much material irrelevant to Their story arch. Rey can do these Ridiculous things Constantly and it makes no sense and was never even mentioned before, even in the films."
Insane Person: "You are just an angry man baby who can't handle strong women in lead roles."
Man: "I guess I've been hit by the Disney Cannon." *Que Laugh Track*