At a guess; if able to monitor over a period of time (e.g. pick up data from a parked car), a potential burglar can see when there is activity and figure what times of the day house occupants are normally at home.
More subtle; the burglar could just park up and go off for a few hours and gather the data they need - no need for a suspicious camera pointing out of the car to monitor patterns.
If the burglar only takes a 30 second look before breaking in, residents could be home but away from a window, with this the burglar can more confidently know when is a good time to break in, without exposing themselves to the same risk that looking around the house brings.
I mean, sure, but who is going to do that when they can... look to see when people are home.