Precisely. This is similar to the case of the catching of the Golden State Killer, where they used DNA correlation to find a possible suspect but that narrowed the focus of investigation; it wasn't the evidence brought to convict.
I think it's probably acceptable for society to grant large leeway for information that focuses an investigation, while keeping the set of acceptable evidence for conviction narrow.
I think it's probably acceptable for society to grant large leeway for information that focuses an investigation, while keeping the set of acceptable evidence for conviction narrow.