Current Apple watch needs the iPhone to access the web.
Some time in the future, no need cell phone, only wearables.
Today is not the day yet.
Even further into the future, no more wearables, embeddable would be the norm.
Even further further into the future... not sure when... cyborg, humans in current form would be 'extinct'.
Is not science fiction, is a direction we are going, we may not be alive to see it happen.
My drift is you're looking too far into the future, of course, not that far, just an arbitrary future in between now and infinite future. Appropriate is the operating word.