No dark corner required, have you seen how many simps bought gamer girl bath water?Ojou-sama flavored water would probably sell pretty well in certain dark corners of the web...
The Bear Grylls in me would like to disagree, seems like a very useful outdoors survival tool, so long as it's durable and doesn't require an electric charge; and no, pee is the last water source I'd think of using that on. Might have some hang-ups if it can't be turned off, but simply putting it away or inside a sealed container should helpLooks like that device wad a failure after all