It's simple, the surface of attack of their system is much larger with the mere existence of this backup scheme, even if none of their customer used it...for the convenience of a fringe of their customers (the real reason is to widen their userbase to less security conscious customers and make more money this way). They also have proven to be poor deciders in the past when it comes to protecting their customers' data. The two combined make me want to never purchase a device again from them, and made me demand that they delete all my PII from a former purchase.

If these red flags are not red enough for you, go on, use them, I refuse to recommend them anymore for the stated reasons, especially when there are alternatives with better security/track records.