Bottom line, the article is written by a journalist who doesn't really understand the world he's writing about.
What about the authors of the studies that found HemCon no more effective than gauze? Did they not know what they were talking about, either?
What about the study author who rejected a negative result with HemCon as an outlier without disclosing it?
We're not talking about rejecting clotting agents in general, we're talking about the effectiveness of HemCon specifically.