Why do people do their sets directly in front of the dumbbell rack?

I saw a guy grab a set of dumbbells, do his set, and then put the weights back in their original spots on the rack. He rested for a minute or two, then got back up, grabbed the same dumbbells, and did the same exercise. All while standing directly in front of the rack.

Why not just take the dumbbells over to a workout bench or another open area? When you stand in front of the rack between sets, you’re blocking other people from getting the weights they need and taking up unnecessary space.
Am I the only one who finds this annoying?