The "vulnerability" part doesn't seem to be substantiated. From wikipedia:

>The images were initially believed to have been obtained via a breach of Apple's cloud services suite iCloud,[1][2] or a security issue in the iCloud API which allowed them to make unlimited attempts at guessing victims' passwords.[3][4] Apple claimed in a press release that access was gained via spear phishing attacks.[5][6]

Regardless of their security practices, it's a stretch to equate getting hacked with knowingly making available data. Moreover you can opt out of icloud backup, unlike with whatever is happening with apps mentioned in the OP.

And why do you assume bad faith without any proof of foul play?