He was a well-known, self-declared drug addict.
He checked himself into a renewal center just a few weeks ago.
Whitney was high and accidentally drown. This dude committed suicide because he was depressed and most likely broke. Regardless of whether or not he was on drugs, he'd still be depressed and broke. It's not like he accidentally died due to drugs, he killed himself.
So it seems like you're trying to draw a comparison that doesn't fit, at all.
Fred.