Wings are not usually what gets damaged during hard landings. They are designed to flex quite a bit, so they just flop up and down.
The problem is usually the rear and forward sections of the fuse. They receive the brunt of the loads in a hard landing and will therefore wrinkle.
A short landing does not mean hard. Only Navy pilots think that way.
These guys planted it on unexpectedly. How can you tell? There is no x-wind correction, which also means that the resultant side-load almost put it off the pavement, just look at the right wing gear.
They either flared late or they took the power out too early. Either way, there are no excuses to hide the fact that it was a bad landing.