So...
1. I think it sets a bad precedent to sell tickets to something, a new trilogy in the Star Wars saga, just to wipe it from canon less than a year after its conclusion. Especially because they weren't bad movies to any extent - the overall quality was higher than some other movies in the franchise, the first two were well-received critically and all made a looottt of money and I imagine are all on the list of highest grossing movies of all time. I think removing something from canon based on the subjective feelings of an over-passionate fanbase who no longer see any of the movies objectively and may not represent the wider audience would be a huge mistake. After some aspects of The Last Jedi and quite a lot of The Rise of Skywalker had a sense of being included for the purposes of appeasing the internet, I don't want fans to have so much control over the direction and the canon of the franchise whatsoever. I say that having been a Star Wars fan for around 25+ years.
2. Movies, especially franchises like Star Wars, are the product of many, many people, not only one. A producer has some control over the eventual product, but so do many other people working on the movie. It's impossible to blame one person for an aspect of a movie you didn't like when in reality, there is no guarantee that person was involved. Kathleen Kennedy has an impressive record as a producer and has worked on many of the best movies of all time, and she's been awarded for her work. She's very talented. That doesn't guarantee she didn't make mistakes working with Star Wars, but I think singling her out as the one person responsible for the perceived failures of a trilogy worked on by hundreds is not only impossible but very wrong imo.
3. YouTube videos are not news (unless they come from official sources, and even then... ehhhh it depends on the source). YouTube videos are not reliable sources of information. Tbh, I've met quite a few people now who have used YouTube videos posted by random strangers on the internet as sources and every one of them has been misled and led to believe things about other people that really aren't true. Anyone can theoretically post any opinion on YouTube and claim it's factual, no matter how untrue it really is. They will never be held accountable like real news sources and never be fact checked because the people watching their videos will already agree with what they say because of the recommendation algorithms. YouTube is filled with people who make videos airing their grievances and opinions no matter how false and people just seem to... absorb everything without viewing things critically or fact checking. Too many people seem to think, "I want it to be true, therefore it must be true" and YouTube rewards that way of thinking. YouTube is definitely not a reliable source of information and never will be.