"Nerfed" in the gaming sense of "they took away an ability or made it less good" (as in "suddenly they made my barbarian's axe like it's made by nerf"/"they nerfed that, yeah"). They were making Gen4 cars with CCS, then they had some kind of chip issue and started shipping Gen 4 cars with either Gen 3 boards or a Gen4 chip without the CCS portion, so there was at least one period when the person who ordered a month before you might have had CCS, and somebody ordering a month after you had CCS, and you all three ordered the same options, but your car didn't have CCS because it got the "nerfed" ECU.