I think what they were going for is the tabletop feeling of looting absolutely everything, but while players do do that. They don't ask their DM: "Can I loot that container?" "Yes, it has nothing." "Okay what about that container?". They actually just loot the entire room at once and then get an accounting of what they found. I think the game could benefit with something similar. Once a room is clear of hostiles, you should be able to loot everything. They could even throw in a perception check to see how well you did so. This could open a container menu that collates all of the containers in the room or for outside environments, a set area that the button can highlight.
