That's par for the course for the sort of investigation we're talking about, though. It's not a 'fishing expedition', it's just a practice that's narrowly tailored to try and figure out the structure of highly dangerous crime cells and networks, as well as the possible perpetrators involved. There's a bit of a scare about 'metadata' collection lately, but as a tool it does have its narrow uses.

Do you have any basis for your claims of "narrowly tailored" or are you just making up facts?

If it were narrowly tailored, the FBI wouldn't be able to access the information when conducting an investigation that would not have otherwise been able to obtain that information without a court order.

Additionally your attempt to justify why this is OK is also wrong, NSLs are not supposed to be used to investigate organized crime, but to investigate and prevent terrorist attacks.