Just found the quote I think you mean were graywolf says that butane is slightly water soluble and hexane is completely insoluble.... didn't know that but apparently it's true but only at very low concentrations of less than 0.01%... either way butane being slightly soluble in water is not the same thing as water being slightly soluble in butane
ETA thanks for the link, found it earlier but I am a slow poster
The key to the conflict is in the word taste. Some water solubles add flavors beyond other terpenes and the hashy taste of cannabis, that many find enjoyable.
I also don't use bone dry material, because it is too brittle and frangible, producing fines which adds filtration issues and in the process of making it bone dry, the flavorful and salubrious lighter monoterpenes and sesquiterpenes are significantly reduced.
Butane is slightly water soluble,but it still makes a damn tasty extraction out of fresh frozen material. It is my hands down favorite in fact, and was the favorite of the test panel, because of all the retained lighter terpenes. The most often used phrase to describe it, was "Fresh!"
The next best tasting BHO extraction is using material that has been dried around 5/7 days, but even that is actually less flavorful than a well done QWET, because of the additional floral content of the QWET from using a polar solvent.
The trick with processing fresh material, is to keep the plant material and the butane below about -32C/0F. At that temperature the resins dissolve relatively slow, so soaking them in a chilled thermos for 30 minutes or so, will work better than a simple flow through column.
Hands down the master at that process is Jump, whom I notice is on this forum. Perhaps he will share his absolute amber in 15 minutes process that he has developed and dialed in?