'If not for the existence and success of iOS, Nokia wouldn’t be in trouble..' If not for Nokia, iOS would never existed, touch screen phones would not have been invented.
If not for the competitiveness and success of Windows, Apple wouldn't have had to redesign itself. And now Windows is redesigning itself to compete. Apple didn't invent this stuff, they re-adapted existing technologies into a pioneering product. And now other companies are doing the same.
Gruber's points do not impact as much with such a thick layer of bias.