From the video

Pick one this season is by far the best... For those who don't know, he has a high ankle sprain... I would say closer to pick 40 just because he might be ready for week one, but we don't know... Allgeier was already going to push him for touches.
STACKED’s take
High ankle sprain drops him from pick 1 to ~pick 40; Allgeier competition a concern
The source recommends Jahmyr Gibbs as the clear pick 1 overall in all formats this season; however, Gibbs suffered a high ankle sprain and the source is concerned about the setback rate and recovery timeline. Initially ranked around pick 25–26, the source now projects him closer to pick 40 due to uncertainty about week one readiness, potential for setbacks, rookie status, and competition from Allgeier for touches on early downs. Allgeier is expected to push Gibbs for touches, particularly on early downs; the Falcons are not trying to overload Gibbs this season, and combined with a bad team and brutal strength of schedule, he could open the season slowly and may be better acquired via trade later.
Jahmyr GibbsRB · DETPlayer page — value, ADP, projections, and every insight