All of the benefits they talk about also apply to growing plants... how is this better than the old way of turning sunlight, CO2, nutrients, and water into food?
And this is speculation on my part, but I assume not needing pesticides, and going straight to the end product instead of having to harvest, store and process the plant-based food are also advantages.
Whatever microbiology they are using (probably yeast) will certainly require harvesting, storage and processing in order to turn into foods.