They just have zero regen so braking is 100% friction braking. Honda wanted to give us consistent brake feel under all conditions (like with a full battery) for safety sake so they designed this rather complex system. All other EVs, hybrids, and PHEVs simply give you friction braking when the battery is full. Hence the many chorus of complaints on how bad the brakes feel when reviewed by car magazines. The Hondas have gotten rave reviews for how natural and consistent the brakes feel.