“In September 2015, Apple removed the iFixit app from the App Store in reaction to the company's publication of a teardown of a developer pre-release version of the Apple TV(4th generation) obtained under Apple's Developer Program violating a signed Non-Disclosure Agreement and as such their developer account was suspended.”

IIRC, they did a tear down way earlier than Apple wanted them to, and lost early access to all future iPhones. It’s not that they don’t WANT to do it, they just HAVE to wait to get it like everyone else.