Yes, but as soon all jumped, the aircraft dive to land and load the bext batch of skydivers.
The plane is usually already on the ground, loading, before the previous batch touch ground.
BUT the plane must dive far from the skydivers obviously. Was probably not the case here. More you go fast to land, better is the profit (quick rotation = more people = profit)
Edit: whoua, just read the french articles about this. The pilot didnt had a valid license at the time of the accident. He was not fit (in term of health) to fly any plane that day…