So, not to be picky, but, seriously, is that quote for real? There are several very odd English usages in those quotes about Siri. And I'm not being insulting, it's just that for a speech/AI company, you'd think they would parse and say things very precisely! This sounds/looks like a foreign-language speaker or something. Not that there's anything wrong with that...
The reason for this state of affairs is that while Apple, Google and the some others have mastered how the use machine learning for speech-recognition, they are still stuck with medieval approach when it comes of conversational voice dialog. They are still using pre-programmed flow-chart based response that don't learn.