Low efficiency for mining doesn't change the fact that those GPU's could be used for mining also. Mainly, they make chips for GPU's for computers, but they could be also used for mining. It doesn't say that they are used for mining only.
Among others I noticed.
There is possibility that they are making ASIC miners that could be used for ETH mining, it is not impossible. If something is not done before, it doesn't mean it is impossible.
As I said before, if something is not done before it doesn't mean its impossible. I don't understand why there couldn't be dual algorithm chip that could do both SHA256 and Ethash. Also maybe they will insert two separated chips that would be dedicated for one algorithm only. That way you could have one ASIC miner for two or more algorithms. They didn't specify "how" they'r going to make ASIC miner that could do what they say it do. We need to wait and see I guess.