The actual, boring answer is because family calendars can get complicated quickly and then ore people are involved and updating them the easier it is to miss something. So the use case of “will help you keep track of what the fuck is going on” is a legitimate advertising angle.

In an absurd sense, it’s similar to the “oops, we forgot to put the safeties on and our super clever bot totally autonomously did something insanely sophisticated. Don’t worry, we fixed it though”. Anything sophisticated enough to stalk and harass a journalist is more than capable of planning a meeting.

Anything capable of putting together a podcast about everything going on is more than capable of actually sending you a reliable reminder for a doctor’s appointment for your second kid that you weren’t told about, or letting you know that you’re not free Wednesday at 1 when talking with the repair person.