Apple grabs its chance to tell users about push notification privacy
A senator's open letter making it public that iPhone push notifications can be used to track users has let Apple publish a warning about the topic.

You can control what push notifications you see, but you can't stop governments using them for survelillance
On Wednesday, Senator Wyden made a seemingly wild accusation that governments could use push notifications on iPhones and Android to spy on people. Apple immediately revealed that not only is this true, but also that the government had mandated that it not be revealed.
As well as publicly backing Wyden's call for both it and Google to be allowed to inform users of push notification issues, Apple has now added a warning to its "Legal Process Guidelines" document on the Apple website.
"When users allow an application they have installed to receive push notifications, an Apple Push Notification Service (APNs) token is generated and registered to that developer and device," says Apple under the new heading, "Apple Push Notification Service (APNs)."
"Some apps may have multiple APNs tokens for one account on one device to differentiate between messages and multi-media," it continues. "The Apple ID associated with a registered APNs token may be obtained with a subpoena or greater legal process."
It's still not known how common it is for requests for push notification data to be made by governments.
Read on AppleInsider
Comments
So no, not “all our data” can be handed over surreptitiously. Privacy and security ARE baked into Apple’s iOS, but a few things can be compromised by governments that go through a legal process to obtain a subpoena or court order owing to suspicion of illegal activity.
Before making statements you think should be accepted as facts, you should have looked. They aren't. Like with the Senator, now that you've brought it up:
"Google, meanwhile, said in a statement that it was "the first major company to publish a public transparency report sharing the number and types of government requests for user data we receive, including the requests referred to by Sen. Wyden".
"For U.S. requests of push notifications and other non-content information, Google said it requires a court order that is subject to judicial oversight, not just a subpoena. With such orders, federal officials must persuade a judge that the requested data is relevant and material to an ongoing criminal probe."
Beginning in 2010...
https://transparencyreport.google.com/about?hl=en
Apple followed three years later.
Google's statement was an accurate one.