Warning: this article contains major spoilers for Star Wars: The Rise of Skywalker!
Star Wars: The Rise of Skywalker was never going to be as good as fans wanted it to be. The pressure of wrapping up not just a trilogy of space fantasy blockbusters but an entire cinematic saga dating back 42 years is too much for any one film to realistically manage. Even so, The Rise of Skywalker is a sequel full of missed opportunities — and perhaps nowhere is that more obvious than in how the movie wraps up the story of the Jedi.
When absorbed chronologically, the Skywalker Saga is a story about the failure of the Jedi. In Episode I we see the Jedi Order at the height of its power. Yet even as they sense the Dark Side growing in power, the Jedi simply watch, wait and put their faith in a vague prophecy about a Chosen One restoring balance to the Force. Their hubris is so great that the Jedi wind up losing the battle for the Republic — and their lives — before they even knew it was being fought.
Source: IGN.com The Biggest Missed Opportunity in Star Wars: The Rise of Skywalker