From the video

Video: Week 1 Fantasy Football FLEX Rankings
David Montgomery against the Bills at 34... do I really believe that David Montgomery should be ranking this high coming off a year with 9.8 fantasy points per game... I could see David Montgomery going up or down in my rest of season rankings based on what happens in that game.
Mentioned at 7:12 – 7:33Captured by STACKED 9 hr after posting

STACKED’s take

NeutralProjection

Ranked 34th vs Bills; rest-of-season rank depends on Marks split

Ranked 34th against the Bills in Week 1 FLEX rankings. The source questions this ranking given Montgomery's 9.8 fantasy points per game average last season; his rest-of-season ranking could move up or down based on the split with Woody Marks in this game.

David Montgomery headshotDavid MontgomeryRB · HOUPlayer page — value, ADP, projections, and every insight