In regard to his reduced usage on third down, I think the Titans just love Dontrell Hilliard as a pass-catching option out of the backfield. The trust in him has only grown since he played a critical role filling the Derrick Henry void last season.
The author pointed out Henry had 21 carries, a little below the number of 25 the story mentioned as what the team likes to give him. Henry was also ineffective and only ran nine times in the second half. Henry is still expected to get his share of the work, but it seems like Hilliard has carved out a role for himself as well. He led the team in receiving yards and could certainly be at least a flex option in typical fantasy leagues if this workload continues.