Sure, but for all games which don't have that this is a great option -- especially if you have a faster GPU!
Ofcourse, I've got a 1080 and this find sounds great to me, but will steal require some per game tweaking. Anything that makes tweaking easier or non-existent (for instance, Engine-level Adaptive SuperSampling) is a plus.
Hopefully though, someone will code a simple launcher where you can tweak this setting straight from SteamVR dashboard at least.