The judge's opinion explains this in detail. It depends on the so-called "good-faith exception" to the exclusionary doctrine.
The idea is that if the police tell the truth in their warrant application of what they are looking for and why, the judge issues a search warrant, and the police lawfully execute the warrant, then there's no point in suppressing the evidence just because, years later, it's determined that the warrant should not have issued.
The idea is that if the police tell the truth in their warrant application of what they are looking for and why, the judge issues a search warrant, and the police lawfully execute the warrant, then there's no point in suppressing the evidence just because, years later, it's determined that the warrant should not have issued.
https://en.wikipedia.org/wiki/Good-faith_exception