The article says it will save costs in maintenance but I think this concept will be more expensive to run. You'll need at least one operator at every station level (so at every car) to check the restraints. For the big crowds of a Disney park they probably also need an unloading station where they also need at least one operator at every level in case a restraint gets stuck. Also the floors for the loading and unloading stations will probably also be pretty expensive for maintenance The coaster concept seems nice and simple but everything around it is way more complex than a Vekoma or B&M.
EDIT:
Dirk_Ermen wrote:
Also the precision system on getting the train on the exact spot in the station, would take some great accuracy with a different weight of the train each time. Otherwise all catwalks can't expand to let guests load/unload.
I think this won't be a big problem, they could build in some kind of anti-rollback on the exact height as the platforms, lift the train to just a little bit above this anti-rollback and then let the train rest on it.