You're right, I agree. But my point is this: For a team to show up to this workout would be very telling of their current state for multiple reasons; he is a late-30's aged WR, has been problematic for teams in the past, and is coming off a serious knee injury. I really don't think any team wants to show their hand by attending for those reasons, because they would come off as desperate. What I think is happening here is there are some teams interested, but rather than attend the workout, they watched the stream to see if it was even worth working him out at their own facility. Do I think it is possible to tell from a video whether he is worth signing? Absolutely not. But I do believe you can watch a video and see if he is still currently affected by the injury, and from that, whether or not it is worth it to bring him in for a more thorough workout.