The caveats are missing the point that FSD is very obviously less safe than a human driver, unless you constrain the data to long stretches of interstate road during the day, with nice weather, clearly marked road lines and minimal construction. At that point, my "intuition" tells me human drivers probably still safer, but under typical driving conditions they very obviously are (at least with Tesla FSD, I don't know about Waymo)
The reason why I spent 3/4 of my post on caveats was because I didn't want people to read my post as claiming that FSD was safe, and instead focus on my real point that the unthinkable numbers from the video aren't actually unthinkable anymore because Tesla has a massive fleet. You're right, though, I could have spent 5/6 of my post on caveats instead. I apologize for my indiscretion.
FSD's imperfections and supervision do not invalidate their fleet's size and its consequent ability to collect training data and statistics (eventually, deaths per mile statistics). The low fleet size assumption in the presentation is simply toast.
If I had claimed that the 500 million number indicated a certain level of deaths-per-mile safety, that would be invalid -- but I spent 3/4 of my post emphasizing that it did not, even though you keep pretending otherwise.
