Maybe it's only the videos, but watching those two in order managed to be even more impactful than any of this alone. You have the one which seemed to be when it was young, when the robot was new, and the tiles were white, and the spatter on the walls and outside the robot's reach seemed mostly incidental. It whirs fairly loudly as it does its little idle dances, spinning its stiff cluster of squeegees around with grace and aplomb.
And then you have the second video. Clearly some years later. The tiles are still white, but dingy, faded, and clearly carry the subtle yet inescapable marks of age and neglect. The fluid seems just subtly different, perhaps more viscous, perhaps more dark. Perhaps a bit more looking like blood, rather than brake fluid. And the robot seems just a little different. It's quieter, all its joints worn smooth with time and ceaseless work. It still does its little dances, but they're fewer, because it seems to need to work harder to contain the same fluid. It seems to not be as efficient, despite using the same motions as before. It looks the same, and yet it also looks more tired and worn.
And the spatter. Just a few drops flung to the walls, but after so much more time it's not the incidental sprinkle from before. It's great washes across the walls, it's a coating everywhere that the arm cannot reach. It's the little trickling loss of a day, multiplied by a thousand years. It's every bit that the robot couldn't help but lose, across all its days and years. Every bit it lost, and couldn't get back.