That video is from 2019. How many updates of Autopilot or FSD where there since then? I mean the general question is are previous tests invalid once updates rollout and should the official testing be done every time there is update to Autopilot/FSD?
The point is the video is likely faked. This is a well known feature that works in many examples of testing and is one of the things that's been working since forever. Detecting pedestrians was one of the first things they added before it was even called 'full self driving'.
