There is no hypocrisy.
Jeremy is not under any duty to disclose the Statement of Reasons. It's a private document. Jeremy is a private individual engaged in litigation. He is not a public body.
A court can order Jeremy to disclose private documents, but let us consider what the word 'disclosure' actually means.
It's when in litigation, or potential litigation, one party reveals to another documents on which it intends to rely. The Crown can't rely on the Statement of Reasons, as it's not relevant to the current application. Nor do they need to, as the same body that issued the Statement of Reasons is now reviewing Jeremy's latest CCRC application and will not normally accept re-submissions of evidence already disposed of.
That's why, whatever it may contain, disclosing the Statement of Reasons would be a pointless exercise in terms of the legal process.
What you really mean is not that Jeremy should disclose the Statement of Reasons, but that he should share it with the public and publish it for all to see. Why should he? You may say that if it's no longer relevant to the legal process, then what's the harm? But if it's no longer relevant, then why should he bother? Would you share with all the world private correspondence with a public body if you were undertaking a criminal appeal or some other sort of litigation? You are asking him to voluntarily do this. Or you think, failing that, the CCRC should be permitted to publish the document on its own initiative, yet the CCRC is not allowed to do that, as the document is directed at the applicant.
In contrast, documents generated by and held by public bodies, such as the police, are not just directed at police officers and there is no expectation that only other police officers will ever read them. They are public property and potentially disclosable.
Bamber isn't a litigant. He's a convicted mass murderer/child killer who has spent some 36 years behind bars and counting!
And he isn't a private individual thanks to his 'official' website and various social media platforms. He attempts to engage with the public directly, via his blogs etc, and indirectly through the support group doing his bidding. Therefore we, the public, have a right to challenge him and the support group.
A campaign was orchestrated in an attempt to petition officialdom re non-disclosure. If you can't see the double standards and hypocrisy then really there's no hope for you.