Everybody else for that matter, this seems to be a very cavalier use of what should be private data. Not at all what I would like to see as somebody who cares about privacy. Is it possible to turn off the logging?
Near the top of the article: Tesla data logging is only turned on with explicit written permission from customers, but after Top Gear BS, we always keep it on for media.
I would guess that when Tesla allow you to borrow one of their cars for the purpose of writing a review one of the lines on the contract says they are allowed to record your journey. The original article mentions it is normally turned off for customers.
Journalists are not the owners. They do not have an expectation of privacy when reviewing a car. They can use their own cars when cheating on their spouses.