Protein is listed in the nutrition facts all over the world. What GP is saying is that for Solein to be advertised and labeled as a protein it has to be a complete protein. This seems fairly accurate believable, but I know there are protein powders that are not complete proteins (typically not sold in grocery stores though)

If it has a similar profile to soy or algae like they claim it is a complete protein, or else that’s a false statement.