There are zillions of those.
One thing they all struggle is the height for tall items and the MSRP.
Average 250-300 dollars for a tiny dishwasher is too much. Many people cannot afford that.
Of course, an automatic dishwasher is even more convenient, but, well, the whole concept runs around being as inexpensive as possible and yet deliver a good performance.
Of course, it won't be a fantastic dishwasher, leave that for Miele or Bosch or any other high end model.