My opinion...I'd not get the single point companion hitch for a 21 model truck. It has the puck system, get the 3300 puck hitch! He does not need a slider with the new Ford. Great that he bought the right truck, and sure the FW will be nice too!! A new 3300 is about $1,200. What a nice way, for Dad to spend his soon to arrive stimulus check.
I noticed a 3300 on FB marketplace about a week ago, it was 2 years old, looked like new, just some scratches on head surface, for $500. It was gone next day, but would not hurt to look on some of the various items for sale markets.
Jerry