It may well be true that it is easier to initial success. To really know we’d have to do a big study and randomly assign volunteers to two groups, monitor their practice time, and follow their results.
The difference is that it’s always going to be more physically taxing than relaxing into a seat.
But time to initial success is what is key for uptake.
You must know a select group of people, and be overlooking many posts by forum members.
I would agree that most people can learn to ride a unicycle if they really want to, but there’s also selection bias there - we generally talk about unicycles with other unicyclists, or with people who “couldn’t imagine that they could ever do that” and so have never really tried.
The lack of torque in that position is widely recognized here and elsewhere.
“Needing” an oval wheel to compensate is a bit of an overstatement - it is an interesting idea, and that of product marketing that isn’t pure hype is made of interesting ideas.
Personally I would have preferred if it were round, in fact I may try substituting the wheel from my 20" to see how it compares.
I’d also prefer if it were a bit larger, maybe 24", I suspect the size was chosen for manufacturing/shipping cost reasons rather than ideal performance. Apart form the oval it seems to have strong heritage to a UDC type ultimate wheel, wouldn’t be surprised if they started by experimenting with the pedal mechanisms on those.
Additionally what may be getting lost here is that I didn’t post to promote this. Rather, I posted because there’d been some curiosity about these, but very little in the way of followup from any conventional unicyclists who had tried one. I was curious, I got one cheap, I tried it, and wrote about it.