I mean, even a court doesn't publish all the deliberation that goes into arriving at a decision. They prepare a final verdict and deliver it–while it would be interesting to see, we have reasons we don't post things like "juror 2 thinks what you did was barely legal".
Courts at least try to justify these decisions with supporting documents, evidence, and links to precedent. Apple just rejects, or approves, or approves and rejects and often cannot say why.
Sure. But I don't think them showing their internal discussions would help solve the problem here, because their internal discussion is likely to be inconsistent and poorly documented.