If I buy a car and, after a while, the guy who sold me the car comes in the middle of the night and takes the wheels, isn't it theft?
The article you're referring to on page 52 has provisions regarding confusion and/or impersonation, following the previously mentioned positive affirmation.
You need the full context of the T&C's, don't cherry pick.
Tesla remotely disable cars when they decide to, as they claim that they sell you the car, but only license the software. You get to keep the car, but loose the license to operate the software needed to actually make it useable.