This sort of stuff could be done for PhD dissertations or studies in a number of different fields with absolutely no problem or issue of privacy.
I understand it just fine. I work with marketing databases for a living and understand what is being done far better than the average bear.
What happened is the fedgov asked for phone records they have no business having, and telecom companies handed over data they had no business handing over. There is no probable cause in the entire calling list for Verizon.
This sort of stuff could be done for PhD dissertations or studies in a number of different fields with absolutely no problem or issue of privacy.
A PhD candidate does not have the power to arrest and imprison people.