aural hallucinations were are sufficient to check the hallucinations box, is this incorrect?

Auditory hallucinations but yeah....

What I said was that "did someone say something" false positives that you heard something are easily handwaved away, pretty normal.

But visual hallucinations are often what makes a schizophrenic realize that they're experiencing hallucinations. Because a visual hallucinations can't interact with reality.

If a blind person hears "fuck you Bob, step in the street"...

Bob can't be 100% sure there's not someone fucking with them.

That could be all the "protection" is, just having the benefit of the doubt. They could be experiencing shit, but just fucking dealing with it.

That is correct, also not all types of schizophrenia have hallucinations as symptom at all. A diagnosis of paranoid schizophrenia does not require hallucinations among the symptoms.