I'm not a fan of the bias towards "Gears are old tech, and that makes them bad" but I can see a lot of interesting possibilities with fluid coupling. The variables involved in power transmission for these things would be pretty wild to characterize, and the article video clearly shows inefficiencies in the system with the driven cylinder having counter rotational flow against it.

> I'm not a fan of the bias towards "Gears are old tech, and that makes them bad"

If the gears don't at least require an app with a subscription and regular updates to use, they must be old tech

/sarcasm