Yes. Watching the second video, you can see the second car's brake lights come on quite quickly, given the Tesla's actions were completely strange and unexpected. Less than a second from when the Tesla cuts in front and starts braking to the vehicle behind hitting the brakes. They're definitely not at fault. Some of the cars that piled in behind were a different matter though. Some were able to stop while others didn't. Those ones must have been following too close and/or not paying enough attention.