I wonder if there are some good practical reasons though. Like if they were to do this with real towels it could potentially be heavy and dangerous. If a bunch of towels did fall, it would be significant work to put them back, and now they’d be dirty from the floor the public has been walking all over.
Also, the fluorescent lights fade stuff pretty quick so if they didn’t cycle inventory fast enough you’d see fading, and they’d fade at different rates due to being exposed for different lengths of time and look weird.