That's because they're too busy trying to justify their choices. Sometimes I wonder who they're trying to convince - others or themselves.
The problem with most cannabis growers is they're lazy. They talk the name talk, not the mineral value. How many times has some newb complained "help, my leaves are turning yellow and have spots on them" tosses out a product name or two and when I try to make a diagnosis by requesting what's actually in it, they don't know. "Well, Joe used it. I know it works!" Soooooooooo, I do a Google and if I'm lucky I find out the actual salts and nutrient values. What's really frustrating is when you can't get the content info. I don't like government intervention, but this is one time when it makes sense to have a regulatory agency mandating that ever product sold have a complete GA, just like your McDonald's burger. AN's been busted on numerous occasions for fraud. Using ingredients that are harmful to you health. They don't give a shit. They're only in it for the money and much to the surprise of some of numb nuts, AN is not your friend.
As I've said a million times the marketing geniuses, web site designers, the graphic artists from Humboldt, AN, canna, Botanicare, Fox, etc. and the hydro store players know the mentality of our group and they play it to the nth degree with charts, over priced products and such.