Because of the contract with the informant.
There is no contract. Contract can not contain provisions that are against the law. Since it is law that a Defendant must be provided ALL discovery, one can’t hide the Discovery behind a Crimestoppers Logo.
I have seen the Crimestoppers logs in many cases. They are redacted to ID #s. However, when something is suspicious the Court can look into the item requested.
Crimestoppers is usually funded by the Gvo’t and/or is part of a Gov’t Agency itself. They can’t hide the information. Just because you want it to be so, doesn’t make it that way.