Why use dry fillers in combination with the Staenis grid?

Thanks to the Staenis grid, it is possible to level dry fillers super easily. Previously, the challenge was to get the granules level, on which special/expensive floor elements from Fermacell, Gyproc, Knauf, etc. were placed. With the Staenis grid, there is a frame present, onto which OSB or Durelis wooden boards can simply be attached. So, it is easier, cheaper, more load-bearing, and effectively 100% reusable.