The test done above has been replicated and the car does break in automated driving. And it gives loud warning to the driver even under normal driving operation and does emergency breaking.
Tesla assumes that if the driver hits the accelerator after the warning, the drive wants to accelerate based on the drivers judgment.
This is what this video shows, notably the person that made this video has refused to release prove that the car actually was in Autopilot, refused to provide evidence that the driver didn't hit the accelerator and refused to provide audio from inside the car so it can be verified that there was no warning sound.
In addition to that, the same person also claims things like 'millions of people will die if Autopilot isn't stopped' and that even under absurd assumptions is a legit insane thing to say.
So what is more likely, that Tesla did something incredibly illegal removing and incredibly important safety critical software that is standard in every Tesla OR that a competitor is doing a PR campaign where they deliberately set up a situation to film a video where they can create maximum damage to Tesla and then advocate for their own solution.
https://www.tesla.com/blog/model-y-earns-5-star-safety-ratin...
So the question is who do you believe, Euro NCAP or a competitor who made a sensationalist viral video.