I have a short bed 2014 Ram 3500 with a pullrite super slide. There have probably been a lot of discussions on here about those supports depending on how you search. I dont use one but I would guess that it may help make it more stable. I would think that if I was stationary for a long time that the best stabilization would come from getting more frame support between the landing gear and the rear stabilizers. Even the rear stabilizers dont seem all that solid on many rigs.
If possible I would try to place maybe 1'x1' patio blocks/pads at the rear and as close to the rear axle and front axle as possible. When you look at the landing gear and the rear stabilizers you have a long span in between that is sitting on spongy tires. Having a total of 8 contact points may make a big difference. I have placed bottle jacks on each side near the axles and it helped. It's one of those things where the more points that you would support it at the more stabil it would be. So is the pin support worth while? I'd do the other stuff first.
I also made stabilizers for my landing gear.