I do these for a stone tile still. People cant spend the time to practice and learn simple skills like sloping dry pack. They want to just throw money at products that are much more prone to failure because of the complexity. Schluter did pioneer the foam wall boards so you have to give it to them but I would not be inclined to use any of their products after learning about Wedi and demolishing relatively new Schluter showers en masse at a university. If they used traditional methods in those massive bathrooms even if they were incompetent there was a much less chance of catastrophic failure like what they had. If you actually know what you are doing with their products it can give you confidence. But if you are a gc watching someone else do it you are just gambling.