I'm saying there's not enough context in the released messages to declare this unambiguously bullshit, and provided a reason why they would record the intersection, as parent comment asked "why in the world would they be taping it".
The number of Uber's violations could have been communicated previously, or could have been implicit in the context of the conversation (at least 1 violation, causing the investigation) - either of these 3 explanations seems equally likely.
Considering how dangerous this is, I really doubt they would run a red light SIX times through the SAME intersection purposefully, risking the life of REAL PEOPLE around them each and every time.
Uber's management and engineers may be irresponsible, but I don't think they're that evil, and I would hope no self-respecting engineer or human being would go along with that. "Oh, that's funny, let's try that again" works for software development, it's emphatically not how real world testing involving danger to life and limb works.
As to "why would this be important enough to text back", that's pure speculation, but if I was tasked with investigating this, I would be pretty relieved to see that this is a location that's confusing human drivers as well, not just my software, and would be pretty likely to communicate that back to my team.