The poster practiced Full Disclosure, which is also a valid disclosure policy.

Since we're just making up statements, I guarantee that Apple would never voluntarily disclose this issue if it was reported privately. So Full Disclosure is the only way to put Apple's feet to the fire, as it's the only way in which this issue would have had any visibility whatsoever.

https://en.wikipedia.org/wiki/Full_disclosure_(computer_secu...

"Responsible Disclosure" is a term rejected by the industry as a loaded phrase that favors vendors, instead preferring the term Coordinated Disclosure. Even so, reasonable professionals still disagree that this is the best option, in a debate that has existed for decades, so it's by no means settled as the "proper" way.