Yes but also the privacy implications are over exaggerated. This kind of "phoning home", at least for Apple Siri/Spotlight, goes through a session ID which is random, regenerated every 30 minutes, and not bound to Apple ID or other user profile. Moreover, IP addresses are not used, not communicated to third parties (eg: Bing for Siri) and anonymized in logs. So yes, it's a "phoning home", but with different implications compared to eg. inputting a wifi password on a logged-in Android phone.