I definitely would prefer the welded ring over the split ring. Split rings are great for treble-hook pull baits, but when I swing hard on a slack line T-rig, I wouldn’t want to chance the knot catching on the end of the split ring.
Watching the vid brought to mind the VMC Tokyo Rig HD Wide Gap hooks I’ve been using lately. I’ve heard the benefit to Tokyo Rig is the more action for less line retrieve. The VMC Tokyo is set up with a welded ring. I think the Tokyo Rig allows a lot of free swinging of the bait and it comes thru the grass surprisingly clean.
I don’t use the Biffle hard heads or Strike King Structure heads because I think I’m losing some of the weedlessness that I love about Texas rig. The vid’s description of punching a mat and then pulling the bait up to the bottom of the mat a letting swing like piñata is a great visual, but since I’m not about punching, this doesn’t apply to me. But just regular hopping, dragging and swimming could get improved action by the ringed hook.
Another very appealing benefit of the ring is that the ring keeps the weight from sticking to the knot (as demonstrated very clearly in the vid). I use to use beads a lot but I don’t much anymore. I tend to fiddle with getting the knot and the weight aligned linearly after each cast. I don’t see this as an issue with the ringed hook.