Privacy Guard) I was the one who purposely removed it. I spent days ( if not weeks ) trying to get it working properly ( read, it never worked properly and causes many issues we still have tickets for ) futhermore Google basically rewrote the full stack once again, while introducing the, now publicly available in 12, permission hub that somehow gave a better view of permissions and easy access to remove them. We know it removed some more granular ops, but it wasn't worth the effort.

SafetyNet) Nothing can legally pass it unless Google certifies it, we can't do much, only Google can enforce it to be used only for security related reasons

Bribing) I wish I got a single cent from any of the OEM I worked on, name it, Motorola, Asus, Huawei, OnePlus, Xiaomi. Not once they threatened us to stop working on their devices, and at the same time didn't help at all ( the only outsider is Asus that is willingly to help ) We simply can't continue supporting every device that enters the door, we don't have any real way to improve it, everyone is doing it voluntarily with no expectation, and so do we as project directors.

PS: I'm one of the directors.