What happens in that video is very different than just recognizing a stationary car in front of you. In the video the Tesla is following the blue car and assumes the driver will turn the steering wheel and follow the blue car. To create the same situation again, it is not enough for just the white car to be there.
I'm sorry, it appears I haven't managed to communicate what I meant very well. Because in my scenario it would never need emergency braking unless you try to crash. Your scenario also counts on making extremely dangerous manoeuvres without signalling, at high speed, and against the explicit instructions that come with TACC. I feel that if you do that, the best course of action for TACC is to slow you safely.You want TACC to ignore the car you are locked to and apply brakes because there is a parked car in front of you before the turn. Your idea is, TACC should know you are not taking the turn and therefore it should apply brakes. The problem with this argument is, the distance it would take to stop is always far greater than how close you can be to parked cars in front of you before you start turning. In this video at 1:54 Consumer Reports says "it takes 118 feet at 60 mph to stop on dry pavement". That's 36 meters = 7 car lengths. If your rule was implemented, the rule would be like this: "Apply brakes if there is a parked car within 7 car lengths while taking a turn at 60 mph".
On highways sometimes one lane stops and others continue. That's one problem area. There are also parked cars on the side of the road like in the photo I added. That's second problem area. Basically, in your version, any time the front of your car points to a parked car within 118 feet, emergency brakes should apply at full force completely unexpectedly. I don't think that would be safe.
You don't need anything fancy for this situation. It often fails to lock onto a stationary car in front of you (standing at a red light, for example). I've tried it many times and it often starts braking only when the car in front is dangerously close.