I think it's a little more complicated than that. He wasn't at Apple from mid-1985 through the end of 1996, yet Apple's culture was still profoundly influenced by him in many ways. Many influential people who were hired pre-1985 were present at Apple during the Sculley, Spindler, and Amelio years. Even in the mid-1990s when Apple was spiraling down the drain, the Mac was still focused on usability and consistency.

However, it seems that under Tim Cook, Apple has gradually lost many of its traditional values when it comes to usability and UI/UX perfectionism. I suspect that the company has not passed on "The Apple Way" to people who joined the company after Steve Jobs' passing. Not only that, there doesn't seem to be an "Apple Way" anymore.

Come to think of it, the old Apple had figures like Bruce Tognazzini who wrote about "The Apple Way"; I have a copy of Tog on Interface that distills many of the UI/UX principles of the classic Mac. I can't think of any figures like Tog in the modern era.

Gradually the Apple software ecosystem is losing its distinctiveness in a world filled with janky software. It's still better than Windows to me, but I'd be happier with Snow Leopard with a modern Web browser and security updates.

It's sad; the classic Mac and Jobs-era Mac OS X were wonderful platforms with rich ecosystems of software that conformed to the Apple Human Interface Guidelines of those eras. I wish a new company or a community open-source project would pick up from where Apple left off when Jobs passed away.