He doesn't use RDT, that's what he said. I will try to grind multiple roasts without RDT in a couple of months when my burrs are broken in a bit. The problem for me with RDT was that some beans got stuck to the inside of the grinder and didn't get through the burrs. Now using a Rocket Blower after everything is done and with the grinder still running you can hear the beans get dislodged and I only have 0.2gr of retention. That was a great improvement for me.
Static also seems to depend on the person. A couple of years ago I was at fransg his house and we both used his HG One with the same beans and he had much less static than me. I don't know how that works but it was something we noticed right away.