Doesn’t the Church of Satan endorse all kinds of hedonism, including drug use?

No. The Church of Satan’s philosophy is Epicurean, not hedonistic. For us a balanced and controlled seeking of pleasures is our goal—indulgence, not compulsion, as would be the case under hedonism. For a detailed explanation of our policy about drug use, please read this essay: The Church of Satan's Policy on Drug Abuse.