Yeah, "some" real-world rules apply, such as milk comes from cows. None the less, it is intellectually dishonest to suggest game changes or game aspects should be designed around reality when you want milk, but fantasy when you want to shoot magic from your fingertips and destroy something with fire or run fast with psychic power. It certainly is not consistent to want different rule sets of the game to be changed in some ways for your personal convenience.
it is? You are unequivocally incorrect. I have literally hundreds of Fea Silk. Multiple members of my guild have hundreds of fae Silk. I mean, sure, if you have an opinion or perspective, discuss it, but it doesn't help the discussion to dishonestly claim to speak for others, especially "everyone"...