Earlier quoted context omitted.
They don't need the information. They care because they are data driven and not personally culpable for their invasions of privacy. Why not collect everything you can without getting more permissions?
You seem to be implying that they are violating privacy just for the heck of it. That's ignoring the very obvious value (even to customers) of this specific type of data. As the other commenter mentioned, knowing where humans choose to be dropped off when heading to a specific location is of obvious value.
Why not both? Why not collect all the information you possibly can, whether or not you immediately see obvious value to it, and then find ways to justify it later?