Recognizing the technology wasn't going to be available in 10 years in a 10-year plan seems important. But you can't expect that from somebody who might legitimately think building hardware was as easy as hacking software.
I agree that he is way too optimistic. And from what I heard from Meta's employee, their hardware org is just not that good and the high level direction is very lacking.
Someone on HN once said (perhaps fact check this), it took Steve Jobs 7 years from the iPod touch to the iphone. Time perception can be skewed.
The iPod Touch and iPhone were both introduced early in 2007. Perhaps you are thinking about the iPod which was released late in 2001.
Ah yes sorry.
It's the iPad concept that came first, in the early 2000s, and they had a prototype for multitouch display.
Then they decided to work on the first iPhone for several years after that.