The problem with the fabtech solution is that it's using Heim joints which dramatically decreases the maintenance interval for them. Ball joints have dust shields and reservoirs to hold grease which keeps dirt and water out of the joint, providing a very long maintenance interval compared to a Heim joint.
Also, in that video, they point out the necked-down material, which isn't that big of a deal. They should look at the axle shafts. When engineered appropriately that transition is perfectly ok.
2D Base Mansquatch: Ord 11-24-2021; VIN 3-16-2022; Schd 5/9/22; Sticker 5/4/22; Modules 5/10/22;Built 5/11/22;Shipt 5/12/22;Delv 5/24/22