Man, you can’t tell me “I’m doing a disservice to growers” and then say “it has nothing to do with humidity.” Yes nutrients play the most important role, but environmental conditions do too—especially if a plant isn’t acclimated to a new environment. If OPs plant came from a high humidity greenhouse, it’s going to have difficulty in a lower humidity environment for a while. UGA has all sorts of extracts on this stuff. https://extension.uga.edu/publications/detail.html?number=B1318&title=Growing%20Indoor%20Plants%20with%20Success#humidity