From the video

Video: 7 Wide Receivers You Are Drafting with Insane Confidence
it was probably his collarbone being on sideways was the reason why he didn't want to get hit over the middle. And I think we would say, yeah, that makes sense.

STACKED’s take

Positive signalInjury

The analyst speculates that Brian Thomas Jr.'s collarbone injury being positioned sideways may have caused him to avoid getting hit over the middle, which could explain his lower target share when on the field with other receivers last year.

Brian Thomas Jr. headshotBrian Thomas Jr.WR · JAXPlayer page — value, ADP, projections, and every insight