I’ve never understood this type of “gotcha!” that always gets trotted out when a company uses another company’s product to develop their own.

If all of the debugging, testing and factory management tools are standardized on Windows - why rewrite them if you don’t need to? It seems like a waste of resources.

(This isn’t limited to Apple or even technology companies. It applies to tons of businesses.)

Honestly, yes. And based on your username I'm surprised you weren't as well. ;)

vbscript is awesome :P

Last I heard, Apple uses Linux for bringup of their silicon in addition to–and sometimes even before–XNU.