From the video

Video: The Perfect Zero RB Team Is Out There (Best Ball)
I have a little bit less Jordan Mason than I do Aaron Jones... I'm going to get done what I talked about, which was getting two of the running backs from the same backfield... So, there you go. We are going to add in one Mr. Aaron Jones.

STACKED’s take

Positive signalValue

Backfield stack with same team; sets ideal floor for zero RB in best ball.

Davis Mattek selects Aaron Jones as his second running back, explicitly executing a backfield-stacking strategy for the zero RB team. Mattek notes he has slightly less exposure to Jordan Mason than Aaron Jones, and the difference in ADP between the two is thin. By taking Aaron Jones, Mattek achieves his stated goal of getting two running backs from the same backfield (Minnesota), which he believes sets an ideal floor for a zero RB team in best ball.

Aaron Jones headshotAaron JonesRB · MINPlayer page — value, ADP, projections, and every insight