The public disclosure about the Apple DLLs could potentially be used to drag Apple into any legal case between somebody versus Cellebrite. The disclosure needs to be public versus private or under seal or whatever to absolve the Cellebrite counterparty of any liability from reverse engineering. Suddenly Apple is now in potential collusion with Cellebrite. Or maybe not. This public disclosure makes the threat of Discovery a bit less toothless.

IANAL but I could imagine Cellebrite has existing or pending litigation where this disclosure upsets their position.