Understand the point people are making, not that Automatic braking doesn’t impact the part that the Dumber Human now no longer controls, it’s the impact overall beyond just that feature, due to relaxed awareness. Did other thins go up, they didn’t say. Sure the impact of rear-ends is 40% less in the automated braking... but shouldn’t it be higher, considering it is no linger left to just the chair moisteners to intervene? With just a warning it’s 13%, so that’s saying more than double the imoact is due to a comouter doing it instead of the inattetive HoOoman who can’t do it with just a warning.
Those stats within the study itself, don’t support a greater attention level, it still did way better without the human. That’s the point, not whether automated systems aren’t good in and of themselves (see prior comments of such) nor that they aren’t saving ever poorer drivers vehicles/lives. Just that there is also a negative effect that lowers the bar for drivers.
Remember with Automatic Braking, you’re at the very beginning where it’s all benefit, and the poor habits, laziness and inability hasn’t had a chance to catch up yet, give it a few years and look at the overall picture, not just the stuff that can be mostly automated.