LSD users have produced all sorts of impactful work? In general, mind-altering-substance-to-aid/inspire-creativity doesn't feel like some controversial statemen

LSD users have produced all sorts of impactful work? In general, mind-altering-substance-to-aid/inspire-creativity doesn't feel like some controversial statement that requires citations - we've got everything from shamanism, through the cliche of the drunk writer to Kubla Khan: or A Vision in a Dream, etc, etc. Why would it be different for LSD or be dependent on LSD providing "access to a deeper, higher reality"?