Yet you still KNOW, this was an NSA back door.
No, Laz, I prefer Hanlon's Razor: "Do not attribute to malice what can be more easily explained by stupidity or incompetence."
These flaws were in existence all the way from 1995, predating the laws and CAPACITY permitting the NSA to search all computers for such data. It was something that could have been discovered at anytime, had someone just looked. Too many processor design engineers would have had to have been complicit with the NSA for this have been deliberate.
So, no Laz, I don't "KNOW this was an NSA back door."
Given Apple's vehement dedication to customer privacy, not to mention their long battle with the FBI and other government agencies, they particularly would not cooperate with such a program in designing their A series of ARM based processors, especially with their refusal to join other NSA programs that most of the other companies joined such as PRISM, for which the Snowden papers only listed a future target date for Apple Computer, Inc., to be joining PRISM, but did not list Apple as having actually joined. Apple always maintained, unlike all the others, they never participated in PRISM.