The problem with any novel or gimmicky tool is that it may well be useful or even ideal under certain circumstances, but the manufacturer usually leaves it as an exercise to the customer to figure out what those circumstances might be. The creators of the spin wrench commit a cardinal sin by only showing the tool in obviously well crafted demo setups. I think the best thing the creators could do would be to make a video using the tool on an actual project.
Pick a car, pick a real job that an actual mechanic might do, attempt to do it with conventional tools, then do it with the spin wrench and demonstrate the value of it. Edit it tightly enough that it isn't boring to watch but not so much that it looks immaculately set up to show the tool in the best light (rather than a realistic one). In the original thread, the creator mentions that some mechanics who have tried it really liked it, so ask them what they liked using it for and show us. Or if cars aren't the best use for the tool but some other niche is, find out what it is and show us that.
Like I said, most of this discussion has been, at its most generous, "it looks neat, but what is it really better at?" Either you can demonstrate that or you can't.