For others issues including the ffmpeg in ongoing drama my best guess is they found by harness written by AI run on top of mighty CloudFuzz!
has nothing todo with p0 actually imo, their ( justified) angriness because of their voluntary time being exploited by bigcorp, and now they forced to fix the nonsense issue reported by bigcorp AI, but nevertheless, this particular issue P0 reported seems influenced by some KPI for BigSleep i guess.