It’s great from benchrest. And that’s where it originated, and PRS has continued it- as PRS is as much barricaded BR as it is anything else.
The reason to actually grip a rifle is “control”. Free recoil means zero control of a gun- that’s doesn’t work in field shooting on live things and/or dynamic shooting. It’s not a death grip- it’s controlled neutral grip.
The goal is to keep the rifle and your body- head eyes, hands, shoulder; as one unit for the entire shot process. Yes real cheekweld does help with recoil/sight movement, but it also keep the whole shooting platform stable and together.
I agree with the criticism of PRS as barricade benchrest. There are many things that do not translate. It doesn’t mean there’s nothing of use from it…
Unlike PRS where the gun’s weight allows for virtually no input, for hunters with lighter rifles, control of the rifle is required.
We have to use our bodies to control the rifle because our rifles doesn’t weigh 20 pounds. It’s about man and machine becoming one…
All of the input from our body to the rifle requires measured and increasing control (in the right directions in anticipation of recoil) until we go too far induce torque, wobble, etc.
The trigger hand traps the rifle to the shoulder, holding firmly.
The cheek/jaw has pressure to connect the face to the rifle in a positive manner to keep eye centered. I do not think the friction to keep the rifle from moving is the main reason. I think it is just enough contact/friction to be a repeatable index/anchor point, without disrupting the rifle or creating tension in the man/machine system.
Done in a balanced way, the rifle can be put in the shoulder pocket or medially, IMO. For shooting that includes a lot of offhand, the shoulder pocket is best and the rifle stock longer. For lots of tripod/bipod shooting medial with a shorter stock works.
I think the argument is much more about hunting/shooting style and technique than right/wrong.
Personally, I want to be able to do both competently. I need to work on the style Form a lot. And, get a stock set up for that style.