I think you're confusing HDCP with Blu-Ray. There is no "backdoor secret" for Blu-Ray. Technically, there isn't for the X360 either, and to the extent the X360, PS3, and BluRay platforms are fundamentally vulnerable to breaks, we're all vulnerable to breaks --- our banks, credit cards, personal computers, email, all of it --- because there are platforms where the fundamental security decision was to rely on platform integrity instead of e.g. broadcast cryptography.
AACS, yes. BD+, no. People like to say BD+ has been cracked because most BD+ disks have been ripped by now, but that's the whole point of BD+; whenever Rovi wants, they can renew the scheme and force people to painstakingly re-break it.
And it's done frequently, and keys are cracked in anywhere from a week to a couple months for each disc. That, to me, is a sign of a broken scheme, semantic arguments notwithstanding.
This is about as bad an analysis of a DVD content protection scheme as can be offered. Publishers are trying to protect the release window, immediately after the publication of a disk, where they make the majority of their money. A scheme that costs rippers weeks-to-months to crack a disk is a spectacular success for them.
The "break" in BD+ will be when someone finds a way to write a ripper that seamlessly handles BD+ refreshes, just like the players do. It'll happen eventually, but it hasn't happened yet.
