Jones's case was civil, where the burden of proof and the penalties are remarkably different.

Had Jones's case been a criminal trial, the lawyer's screwup would have given Jones a powerful Fifth Amendment protection argument for excluding the relevant cell phone data from the trial. And anything that is found in that record is unlikely to be applicable to any criminal proceedings against Jones in the future (with the exception of perjury; I'm actually unclear on how a charge of perjury works in this circumstance when the Court is holding evidence provided by the defendant that the defendant perjured themselves).