If they aren’t going fast enough by the time they need to enter, they yield, not you cut across the stripes, nearly hit the impact attenuator, and run the car behind you into the next lane.

For what it’s worth, I agree with you. Safe driving is about being predictable. But defensive driving is about predicting what others are likely to do. And oftentimes, the answer to “what is this driver near me about to do” is “attempt negligent vehicular manslaughter.”