excerpt from article : "And a person claimed in a later post that “around 300” of their old pictures, some of which were “revealing,” appeared on an iPad they’d wiped per Apple’s guidelines and sold to a friend."

Is this true?

Did a quick scan of the reddit posts referenced in the article and could not find this particular post. But it probably its my fault scanning too fast.

More worrisome is, is the scenario possible? Assuming "wiped per Apple's guidelines" was indeed followed, isn't that technically not possible since the encryption keys were wiped?