It isn’t that people think they know Jobs better, it’s simply the notion that the Apple Pencil somehow contradicts what Jobs said in 2007 which is complete nonsense.
When Jobs said who needs a stylus, he was emphasizing the multi-touch capabilities of the iPhone, which was new the at the time, and unlike other devices that utilized a screen with icons you didn’t need to poke a stick at it in order to use it. It’s still true today but it seems some people still don’t get it.
Apple always marketed the Pencil as a drawing, sketching, painting, scribble tool. They never marketed it as a replacement for navigating the phone or as a better way to navigate the phone. Those who persist in taking a position otherwise apparently never bothered to see the context of what Jobs was saying in the 2007 keynote.