That last part is true, and Apple is addressing that with differential privacy. But even so, there are so many things that Siri should be able to do that she can't. So many simple questions that she can't answer. So many contextual interactions that she completely misses. Being able to string together a series of commands such as "When is X happening?" and she tells you and then "Ok, add it to my calendar" and Siri gets confused about what is going on. To me, that is inexcusable. Or you can't ask simple things like when high tide is. I just asked her "When is high tide in Melbourne Beach Florida" and she told me Friday, April 1, 1988. Seriously. Easily available public information. She never knew the medal counts during the Olympics either, and for years she didn't know what the heat index was—I had to ask her what the "perceived temperature" was. At least they fixed that. I'd be happy with Siri just knowing public information first before diving into my private information.