That’s likely because of its connection to Dave Filoni’s The Mandalorian movie story, which will bring this era together. That Ahsoka has one does not necessarily mean it is part of that - although the eponymous character’s ties to Anakin Skywalker do provide a strong tether - but rather than this is a crucial narrative thread.
The reason Rogue One and Solo didn’t have opening crawls is because they were outside the main Skywalker saga. Related: Star Wars In Order: All Movies & ShowsĪside from the excitement generated by seeing an opening crawl, the message here is clear: Ahsoka is Important. Given even those theatrical movies didn’t have them, then it makes Ahsoka’s opening crawl an even bigger deal, raising the question of just why it has one when so many other projects, which ostensibly filled a similar space in the franchise, did not. That includes not just the live-action and animated TV shows, but spinoff movies Rogue One and Solo.
Taking in the full view of movies and shows of the Disney era, far more projects have been without opening crawls than those that had them.