I think the analysis is correct in that the implementation will die in committee before ever making it to effect, not to mention the practical considerations of implementing this in the lighting-fast timeframe of 3 years. However, I cannot help but point out this part:

So far, not a kill switch, but some kind of technology to detect if you’re driving like a drunk person and disable the vehicle.

"Disable the vehicle" is literally what people mean when they talk about a "kill switch". At best that's an argument over semantics. The law mandates a thing that deliberately stop your car from functioning.