What was actually new that wasn't anticipated, predicted, or leaked for this event? I think the 10.2" iPad may have been an unanticipated announcement. At least, it was not something I'd seen in articles I'd read prior to the event.
None of this is bad, but it changes the dynamic and energy of the press event. Whereas before it was about anticipation and discovery of the new things coming out, now it's just confirmation and filling in details. It's not interesting anymore. Maybe it doesn't need to be interesting, most of these things aren't. It's certainly not hurting Apple's sales for it to be more boring (the event) so long as people still buy their hardware and services.
When the majority of the iPhone X keynote was demonstrating the ability to animate emoji's with your voice, that was it for me.
Of the announcements from this most recent keynote, what was new? The third camera on the iPhone? The update of the main series iPads to use the "Pro" look? A new screen in the Watch? A couple games and a tv show?
These keynotes stopped being relevant when Apple stopped producing anything keynote-worthy. They're just routine at this point.