The Weirdest Gear for Robots I've Every Seen! Is this a Revolution in Robotics or Just More Trash?

This is the weirdest gear/robotic joint I've ever seen. The Tadakuma Lab at Yamagata University have created a pretty impressive drive mechanism for a robotic end effector. Called a cross spherical gear the gear allows for an impressive range of motion and the paper gives a thorough explanation of the kinematics behind the system. Although the main question still remains, "Is it actually good for anything?"

This video I give a quick overview of the paper (ABENICS: Active Ball Joint Mechanism With Three-DoF Based on Spherical Gear Meshings) and give a few thoughts and concerns.

Paper That All of the Information is Pulled From: https://ieeexplore.ieee.org/document/9415699

The Original (As Far As I Can Tell) Video Source: https://youtu.be/hhDdfiRCQS4

Intro: 0:00 The Engineering: 0:20 Manufacturing Downfall 1:25 Movement Downfall 2:44 Why Bother With This Design 3:28 Lubrication for Fun and Profit 4:24 Wires How Do They Work? 4:55 I'm Asking Too Much from Them 5:15 Outro 5:30 ... https://www.youtube.com/watch?v=xfxGlvl7qN8