I did a video about it a while back that might be give you more details
Basically an anti wobble device divorces the x and y motion of the leadscrew from influencing the carriage position, while preserving the exact z axis position the carriage should be at. Each time you turn a leadscrew, the leadscrew nut tends to want to shift slightly to one side due to the angle of the threads in contact and gravity due to the tiny amount of play present between the nut threads and the leadscrew threads, and in thevery case of the Taz 5, flex in the x end plate. A bent or malformed leadscrew will increase the presence of wobble.
Two contra rotating leads crews would help combat the issue, but they are somewhat rare. De syncing the leadscrew rotations so that the thread positions are slightly different can sometimes also help. It doesn’t always. It also doesn’t matter which screw. The downside is that doing do places the bed slightly off level.
How this all translates into cleaner layer lines is related to whether your printer is experiencing wobble or not. To tell if you have wobble, print something, preferably a cube or a cylendar, then hold it up next to your leadscrew. If there is a layer offset pattern that matches the leadscrew thread spacing, you have z wobble. If it doesn’t match it’s a different issue. If wobble is present, the anti wobble just prevents the offset force from trying to move the print head, leading to no layer offset.
A sticking or improperly set up anti wobble can also make wobble worse.
For the Taz 6, you would need to lose a good 22mm worth of print travel to fit one in, which is the main reason there isn’t one yet. That or rebuild the x ends. The 6 generally doesn’t have wobble because the z rods are better placed than they are on the Taz 5. Where it is present, there isn’t a good permanent fix for it.