I agree that it looks a bit radical but if you end up with a disability and this keeps you riding then I`m all for it. Some clever engineering going on with the centre hub steering and suspension.
And, you can always spray it to suit your taste....
Fatter rear tyre?
Probably doesn't need it, because the tyre won't need to lean you can use a car type with a flat tread, not round profile, so that width is all in contact with the road.
Unless the engine's been tuned a lot, it won't break traction....
Except in left handers, obviously.....
It's not falling off, it's an upgrade opportunity.