There is no animal involved in the production of yeast-milk. I eat mushrooms, yeast and yeast based products. I don’t want to harm animals. So far, I think it is OK to east yeast and yeast based products. Hence, I should not have any problem consuming yeast-milk. But because yeast-milk is basically like animal milk, I hesitate accepting the fact that it is OK to consume.

As long as no sentient beings were used without their consent (e.g. to extract genetic material), then I see no ethical issue from a vegan point of view. I do have to question though, on a finite planet with an ever-worsening ecological catastrophe, whether developing such products is an irresponsible use of time and energy and material resources.

I think they’re less efficient than plant-based alternatives and are, at best, a novelty.

No good BLANK!