Buying Bathwater

Nothing scares me nowadays. I’m not a fan of kink shaming but some things I will take a while to understand. My son and best friend were talking about a gorgeous young gamer/influencer by the name of Belle Delphine who sold her bathwater to a fan(s). Good for her for making some money in a very unusual way but how weird is it to buy someone’s bath water? I can somehow see the people that buy porn stars used lingerie or even the people that buy used lingerie in general online but bath water is a strange one to me.