> Fruit of the poisonous trees is a doctrine that extends the exclusionary rule to make evidence inadmissible in court if it was derived from evidence that was illegally obtained.
GP is probably referring to the practice of "Evidence Laundering" which has been deployed from time to time by law enforcement.
Still dubious that this would be used that way just because telecoms would be aware of this potential for misuse and would not give the data up without a subpeona or warrant, which under this ruling would not be allowed.
Search warrants are usually public record after they are unsealed. If they aren't included in evidence its a Brady violation and if caught the case is essentially dead. If the defense sees that the search warrant was given or executed first, they probably have a very strong argument that all the evidence is tainted. Parallel construction doesn't work very well when proof of tainted evidence is publicly available.