

I feel like you may have misunderstood the article. It’s talking about how support is increasing for dedicated Copy keys, and that programmable keyboards make it easy to use dedicated Copy keys. The article does not mention changing the behaviour of Ctrl-C.
Automatics also allow for engine braking. From a quick search, it sounds like a toss-up as to whether that triggers brake lights. Regardless, the article mentions the benefit is not only from cars slowing down, but also from indicating that a car is preparing to stop or “that a stationary vehicle might initiate movement”. Neither of those can be done by an engine brake, so front brake lights would still have a benefit even with a driver that likes engine braking.