Not the kind of information that you use to train computer vision algorithms. I found his claims to be an interesting read.
Nor is there any guarantee that the snapshot in time when he did his research is representative of everything they do.
And such logging behavior can vary by car, by location, and by software version.
I tend to think it is in Tesla’s interest to collect the most useful data, efficiently, and make good tradeoffs when doing so. They say they are gathering data on interventions that will help improve their neural nets. I believe them.
The long section where he describes “campaigns” is Tesla's mechanism for capturing high quality data based on certain triggers, and including pictures.