What's the user experience around using the local contact store?
It seems to me Google Maps would have to preemptively request permission to access local contacts because it wouldn't know in advance if a particular search should match a contact. And some people might be confused by the unexpected request and not understand why contact search isn't working later (or be confused if they disabled Google Maps' contact access because they didn't make the connection).
I can certainly see how, from Google's perspective, it seems cleaner to use the contact store they know they have access to and is presumably the same one they'd use on other platforms - promoting consistency. Is that ideal for every user? Clearly not. But, in the spirit of the original article, it is probably the way to get contact search working with minimum friction for most users.
Right now, when you tap the search field, Google Maps shows me a message saying that I should log into my google account if I want to use contacts etc.; and my contacts are not synced with my google account anyway, so it would either fail silently to find them, or it would try to sync them - which would require asking for permission to access my local contacts anyway.
If it used local contacts and I had denied it access when it asked on the first startup, it could instead display a message saying so, offering a button to click to request access to contacts again. It would be strictly less complicated for the user.
It seems to me Google Maps would have to preemptively request permission to access local contacts because it wouldn't know in advance if a particular search should match a contact. And some people might be confused by the unexpected request and not understand why contact search isn't working later (or be confused if they disabled Google Maps' contact access because they didn't make the connection).
I can certainly see how, from Google's perspective, it seems cleaner to use the contact store they know they have access to and is presumably the same one they'd use on other platforms - promoting consistency. Is that ideal for every user? Clearly not. But, in the spirit of the original article, it is probably the way to get contact search working with minimum friction for most users.