https://phys.org/news/2021-09-chinese-scientists-starch-synt...
I bet this will lead to a agricultural revolution similar in magnitude to the Haber-Bosch process. It will also soften some of the impacts from climate change, both by improving food security and by allowing re-wilding of land currently used for agriculture.
It's not being talked about because people already hate the idea of "processed food" with a passion, let alone the concept of food produced without involving plants. So it will probably make a sneaky entrance via bulk stuff like starch and oils.