From the video

Video: Ranking Every Week 5 Running Back as a Sit or Start
JK Dobbins cannot get anything going... JK Dobbins looks slow. He does not look good... JK Dobbins is going into the shaky flex category despite having a 13 and a half rush attempt total... he's not making big plays. He's not catching any passes.
Mentioned at 23:07 – 23:22Captured by STACKED 10 hr after posting

STACKED’s take

Negative signalBust

Slow and ineffective despite volume; shaky flex despite 13.5 projected carries.

JK Dobbins is placed in the shaky flex category despite a 13.5 rush attempt projection, but BDGE Fantasy Football views him as a bust candidate. Dobbins looks slow and cannot get anything going; he's not making big plays or catching passes. Despite the projected volume, the offense is not working well and defenses can stack the box since Bo Nicks doesn't throw deep. Dobbins fails to live up to preseason optimism that he could be this year's Devonte Williams, and Denver's offensive line is not dominant.

J.K. Dobbins headshotJ.K. DobbinsRB · DENPlayer page — value, ADP, projections, and every insight