The reason why people say that steamed bread slices can nourish the stomach is that steamed bread slices are hard in texture and cannot be wolfed down. They can only be eaten by chewing slowly (naturally digested in the stomach). And "chewing slowly" is also in line with our health care. So there was a theory of nourishing the stomach, but it was just a misinformation and had no scientific basis. If you have objections, you may wish to cite some scientific basis.

As for the question you asked, I believe you should have a clear judgment.