WRT hardware support, I agree, but it won't be available in the early life of any new codec so it's important that it also works well in software (accelerated by SIMD and the like). The power difference is less than you might think, I have some preliminary measurements here: https://people.xiph.org/~tdaede/power/
Assuming the groups listed actually back up their words with action, then hardware support will happen, basically every smart TV shipped already has VP9, so if Google's Youtube and Netflix and Amazon and Microsoft agree on a codec, it'll be in hardware (both in the sense of it being available, and in the sense of it being in every video device you can buy almost instantly.)
Dealing with video is like dealing with the toothpaste aisle at the store. Just a ridiculous amount of unnecessary information.