Come off it mate, these things have only been around comparatively recently.
How do you think we managed before then?
And do not tell me that grass now is stronger than it was. It is not. If your a good grower you might get near the Colombian Gold, Thai Sticks, Durban poison, Jamaican Ganja and good African Weed that was freely available when I was helling around.
I grow in cow shit and tomato ferts outside-you would not tell me my weed tastes of cow shit. From a fall in a meadow I know it doesn't.