From the video

Video: Ranking Every Week 2 Running Back as a Sit or Start
Jonathan Brooks is I wouldn't even put him in the shaky flex category. He's one of those. We want to see it go through the hoop before he's back into our lineups
Mentioned at 3:47 – 5:53Captured by STACKED 6 hr after posting

STACKED’s take

Negative signalRole

Avoid starting Jonathan Brooks until he proves his health

Jonathan Brooks should not be in fantasy lineups currently. The source advises he is not even in the 'shaky flex' category and needs to prove his health and regain control of the backfield before becoming a viable option.

Jonathon Brooks headshotJonathon BrooksRB · CARPlayer page — value, ADP, projections, and every insight