There is a Privacy section with a big button “Data Sharing”
It pops up a large dialog box which says the following;
“We are working hard to improve autonomous safety features and make self-driving a reality for you. You can help Tesla in this effort by sharing diagnostic and usage vehicle data. This data includes short video clips, using the vehicle’s external cameras to learn how to recognize things like lane lines, street signs and traffic light positions. The more fleet learning of road conditions we are able to do, the better your Tesla’s self driving ability will become.
We want to be super clear that the diagnostic and usage data such as short video clips are not linked to your vehicle identification number. In order to protect your privacy, personal information is either not logged at all, is subject to privacy preserving techniques, or is removed from any reports before they’re sent to Tesla. You may enable or disable the collection of this data at any time
Do you agree to allow us to collect this data?
Yes. No. Ask each drive.
Then there are additional sections concerning the interior cabin camera, and concerning navigation and traffic.
I believe all these sections are OPT-IN, I recall getting prompted about sharing interior cabin data after the software update that enabled it, and having the selection be blank to start, but I may be misremembering.