Ive thought about making a post on this as well but sure, stimulators used to drop, however, their drop rate seems to have been upped. I'd used to find maybe 1-2 stimulators a month, but now I find on average 2-3 a day so while the stimulators have always been there, perhaps their rate has been upped? or maybe I just got lucky, lol.
Edit: While this is just the result of the copying of the KMS drop tables...I would say that its a necessary pre-requisite to getting the maker skill... like could we get the maker skill without the KMS drop tables? The stimulators would be hella rare then. Also, how long after monster book/this drop table did they get the maker skill? It might be a good measuring stick to estimate things.
Edit: While this is just the result of the copying of the KMS drop tables...I would say that its a necessary pre-requisite to getting the maker skill... like could we get the maker skill without the KMS drop tables? The stimulators would be hella rare then. Also, how long after monster book/this drop table did they get the maker skill? It might be a good measuring stick to estimate things.