People are downvoting the parent to your comment because of the "a host of many other "incurable" "diseases" part. It's unsubstantiated and unspecific, and it jumps right to conspiracy theory.

People are downvoting you because you are violating at least 3 site guidelines (commenting about voting, alleging astroturfing/shillage, and being civil). Particularly when you could have made a constructive argument and tried to elaborate what conditions it cured, what studies were behind it (maybe summarizing Dr. Fung's research), or other more valuable contributions.