It doesn't seem like anyone else quite has the confusion you do, even if they do think its bad/flawed/silly, so you might wanna look inward here. Instead of spending your energy complaining in three paragraphs that you didn't understand, maybe just try to think about it a little more? Consider that it might be a reading comprehension issue, which is totally understandable for any number of reasons. Did you read the text on the page and truly parse from it that they are attempting to save water with the event itself? Or maybe that was just a skim? Perhaps its a kind of absurd conceit you wanted, unconsciously, to read into this, and so there it was?