Very clever, yes. The compromise of the 'no hinge in the main frame' design approach is of course a larger fold.
The Tyrell IVE uses the same folding concept.
That said, nothing 'tucks' the wheels better than the Brompton when folded, so width wise, its still the neatest and most narrow.
Its really all about compromises and what one prefers and decides what he/she can accept more of.
I am not big nor heavy and to me a bi-fold bikes work well enough and can be lighter on the wallet too.
I can also appreciate the compact fold of the Brompton (though I really dislike the poseur cult that is built around it ); also I am willing to sacrifice some fold compactness for good gear spacing, better efficiency with other folding bikes
Birdy/Tyrell IVE type fold is a reasonable compromise to me too (and the middle ground really depends on where is middle for the user)