That simple process, suggested by Nathan Myhrvold (former MSFT cto) in the modernist cuisine, produces a filet better than most restaurants.
I used to sous-vide a lot. It was certainly great to get perfectly-done steak. but I still didn't love the result and it took me a while to figure out.
Specifically: sous-viding at 130 doesn't reliably render fat. So it's great for a lean filet mignon like your suggesting, but kept giving me rubbery fat in anything with more fat or significant marbling. I eventually switched away from sous-vide (I usually either grill or reverse sear, depending on my effort/time availability) for most cuts these days.
Bad restaurants, sure. It does not hold a candle to any half decent steakhouse.
Honestly this is like the Dropbox comment all over again. Everyone is missing the point, it's glorious. :)
Most people cooking steaks don't care about the optimal way to cook steaks, or want to find out.
Most people building software today don't care about the optimal way to build software, or want to find out.
That's TFA. That's the point. That's what we're discussing. :D