No, that's not the case.
For a production order for subscriber information, there needs to be an affidavit. You have to go before a justice or a judge for them to determine whether you've provided enough facts to get that production order. At the beginning of an investigation, you're trying to determine.... You've figured out that there's a crime, and now you're trying to link that crime to someone. It's not subjective and it's not without process.