@rosehips: ???
In my post, do you see any reference whatsoever to an assumption about anything, or to substance abuse, or to acceptance of it, or to great art? Do you see any position taken on the use of mind-altering drugs?
The question was: What would be different if there were no mind-altering substances?
It is a fact that some works of art, literature, and music have been created under the influence of or in the aftermath of using mind-altering substances. It seems no great logical leap to say that in the absence of that influence, those works would not have been created as they were.
This is to say nothing about the quality or reputation of that work.
Other opinions that you have ascribed to me are not in evidence in my post.