I mean, you can say that all bottled nutes are snake oil.. If your soil is alive, none of that is needed. There are plenty of cheap ways to naturally increase flavor.. Problem is most people don't fully understand how growing cannabis works. You can't make a plant express more "flavor" than it's capable of. People are looking for a "difference".. That's not really possible with autos. No two phenos of an auto will ever be the same or express the same. So many people say that they don't taste a difference. Sugars, sulfur (mid flower), carbohydrates, and uvb lighting will all help maximize the terpene profile.