Well your "connotative" definition is hypocritical. That's what i'm pointing out. You say "natural" means "drug free". Why? Why does it mean drug free? How are steroids unnatural and synthetic chemicals like creatine natural? Creatine can be found in food, Occurs in the body..So what? That doesn't mean the synthetic purified form that is injested in supplements is natural. In fact every single definition of natural...Creatine would be unnatural!
This is kind of a circular argument, but "natural" means drug free because drugs aren't involved.
Not sure how else to say it.
I'm not a scientist, but I don't think creatine is a synthetic chemical. Sounds like you're putting nutritional supplements in the same category as steroids. I don't think that argument works.