But if your warehouse is a mess, if the aisles of your warehouse are blocked by crates strewn everywhere (that you've been meaning to put away for ages), then it does matter if your warehouse is neat and clean because it takes forever to maneuver your forklift in to retrieve products to ship them out. If your warehouse is disorganized, and you can't find anything when you need it, then it matters.
The real trouble, I think, is when people have reasons to choose not to keep the warehouse organized and functioning smoothly (like workers who see it as drudgery or managers who want workers working on something else) and they try to excuse it by saying, "Our customers never visit."
(I don't think the person above is doing that, incidentally. I think they're just agreeing with the keep your eyes on the prize message.)