There's value in OS integration, but again, what are the real use cases? Memoji or whatever doesn't qualify. Apple has added a ton of features in recent years that I haven't used once. If it's going to manage my calendar in a way I can rely on or autocorrect will be smarter, that's useful.
If only they had shown examples of how they are integrating with calendars, emails, texts, photos. You should reach out to Apple's marketing department about producing better release videos that have examples of how the new features will be used. I bet they'd think it was a great idea!