I think, somewhat ironically, that the final "most important" point #6, is by far his weakest. A platform is made stronger by having more tools to create for it

I think, somewhat ironically, that the final "most important" point #6, is by far his weakest. A platform is made stronger by having more tools to create for it. If a tool does not keep up with new platform features then it will suffer in the marketplace. There's nothing about having tool x, that prevents anyone from using tool y or Apple's own toolset. I do however think that Apple is in the right to require the tools to compile to native code using native UI widgets etc, and not be a blackbox runtime. The goal of ensuring consistent user experience is valid and worthy.