It doesn't. It's one of the things in our developer policies, which we require all developers to abide by. We impose a series of restrictions on what information they can collect and how they can use it. Among those restrictions is a rule that says developers cannot ask for more information than they need to operate the service they're providing. Since 2014, we've operated an upfront review process that looks at that, among many other things. But certainly, it's not our intention that apps use the Facebook platform to collect information they don't need. As we announced several weeks ago, we're making much more significant restrictions in the amount of information that most apps can get.
On April 19th, 2018. See this statement in context.