Of course going over the handlebars is possible with a cargo bike. The cyclist will hit the cargo area before they hit the pavement, which makes these situations no less dangerous.
The physics don't work that way. With a normal bicycle, you go over the handlebars because the whole bike tips forward - it's just gravity + momentum. Then you faceplant.
With a wheelbase of 2-3m, there's just no way the bike tips forward like this, especially with the rider positioned towards the back. Couple that with the fact that cargo bikes travel at lower average speeds and it's not clear to me how this injury occurs.
With a wheelbase of 2-3m, there's just no way the bike tips forward like this, especially with the rider positioned towards the back. Couple that with the fact that cargo bikes travel at lower average speeds and it's not clear to me how this injury occurs.