Look at other people's videos of driving through that section of road around the same time - the pedestrian would have been clearly visible and the car and safety driver should both have easily seen them and stopped. If you read about the preliminary NTSB report [1], it's clear that the car had six seconds of warning and 1.3s of certainty of impact, yet did nothing to avoid it, not even alerting the safety driver. The pedestrian may have been foolish, but the car could easily have avoided killing them.
[1] https://www.ntsb.gov/news/press-releases/Pages/NR20180524.as...