Right, but the average thief is probably not that familiar with a Tesla, and even if they are, these guys move very quickly. Their goal is to get in and get out and move to the next car. They're not going to sit there with an angle grinder unless they somehow know you have something good in there.
The average thief is probably not N is not a safe bet for most values of N. Pros exist and technique gets spread from person to person. BITD car stereo systems were the target of choice and I assure you they were significantly more difficult and time consuming to remove than popping open the glovebox on a car that's missing a button. All I'm saying is if car companies are shilling this bs as a security measure I'd take that with a rather large grain of salt.
I bet it takes mere seconds to angle grind your way into a glovebox. Thick hardened steel bike locks resist angle grinders for less than a minute. Thieves also talk to each other and spread techniques.