What good ol' Totilo doesn't tell you (because he has no idea, it's a tradition of Kotaku to write on what you know nothing about) is that the overall smooth effect has really nothing to do with the grass itself, but with the fact that the person in question is using an extremely powerful (and resource-hogging) ENB filter that smooths out everything at the price of performance and detail.
Mind you, that kind of filter can be applied to basically every game that runs on directx, so if you want something like that on ARR, you'll probably be able to run it, if someone gets around making it. Otherwise there are some generic ones that might work.
I truly love press articles on Skyrim mods, mostly because people that write them in 99% of cases never modded skyrim (or even applied mods over the most basic ones) themselves. The amount of ignorance they drop in their writing is enormous
Oh, and by the way, if you don't have a GTX 680 (or two), forget running skyrim like that with more than 5 fps. The game has horrible stutter problems even without this kind of detail when you start modding it heavily.