RKS is proberly just a randrom skunk pheno ie what is now called cheese, at the end of the day insn't the best smokes the first few you have had, the best drink and so so on. IMO that is why a lot of ppl are saying that the old skool weed was best in 77etc, meaning when you was 18 you try good weed you have never felt anything like it and so on, all imo. If the old weed is so lucrative why is it not present?
Not even close, sorry.
The original Skunk stank like all hell due to the Afghan used in it. Sam worked it over the years to remove this. The Cheese is from 1988, nearly a decade after Sam removed the stinky phenos and while it is stinky, it's nothing at all like the smells people describe from RKS. I've grown plenty of rotten smelling Afghans and the stinky skunks were the more indica Afghan dominant ones.
It's still around but not widely held, Sam's is 1000x more common.
The illegal underground nature of the weed scene is largely why things disappear. Many of the old strains were better, there has been a lot of bad breeding done in the last 30 years.