I think that's at least partially why they're going to such drastic lengths with this. They want to separate the markets so they can have more control over them independently, by lowering the value of newer gaming cards to miners they can charge a premium on the CMP cards and by preventing the used card market from being flooded with cheap cards whenever crypto takes a dive. Cheap 1080s flooding the market was one of the reasons the 2000 series didn't do as well.But miners don't want mining-specific cards. These don't have value on the used market. They want gaming cards which can be re-sold.
What miners want really doesn't matter if they can make the alternative more attractive. Of course if they can find a way around the limiter all bets are off but I don't think Nvidia will allow the AIBs to sell uncrippled cards out the back door to miners like some are suggesting, they might sell some GPU/memory packages out the back door themselves though.