Honestly, these days there probably wasn't much benefit. At one point, sure, but looking at it from the standpoint of a non privacy aware person, they're handing so much data over, ignoring the line of their travel probably does near nothing for them, while having and holding that data is a huge negative since they'll always be harassed for it from law enforcement. Without it, they can probably dissolve whole departments of people that had to be dedicated to LE ass kissing so the police didn't have to do their jobs or so they could cast their dragnets and put tons of innocent people through hell while they figured out everything later.