Privacy is a line that will always move, and it's different for every person. One of the biggest challenges that we face is finding a line that works well for everyone, while allowing them to control where that line sits.

As to your second point, sure, we'd love to have people use FullContact. But the post points to many more options than just our own:

"If that’s iCloud, Google Contacts, Outlook.com or heck, even FullContact, great."

As I said in the post, we just want people to use a safe system that makes sense to them. It's our job to make sure that FullContact is the logical choice.