I guess you would have to experienced ppl in their active "using" of various drugs in order to know the following.Unfortunately I have first hand knowledge of such, along with my only sister being a psychologist that for many years has dealt with addictions in its numerous forms(not to mention a grandfather&uncle also psychologists that practiced many years with substance&behavioral addictions)But mainly from knowledge of dealing with addicts personally I know that addicts who have been using for years and even just months QUICKLY build up huge tolerances to their drugs of choice.Meaning it takes larger and larger amounts of the drug to get them "high", so for the most part "using" addicts settle for "daily" maintenance, meaning that because addictions are so very expensive that an addict usually does not have the funds in order to maintain a daily high, but rather just enough to get by on. As the addict has been actively using for long periods of time and in order to not get "sick"(withdrawl)they must atleast "use" enough to get them "normal"(which sometimes the amt an addict needs in order to just function "normal" alot of times is an amt that would make a non addict high as a kite) All of that said, is just to say that more than likely from what I know about the drug use of these ppl they would definitely fit in the category of having to use to to function "normal" or keep from being "sick" and because of that the person does not appear to be "drugged out", high as a kite", "strung out looking", etc. So, to others Misty, Tommy, etc would not appear "drugged out" as they were using amts that only keep them "normal"...
(sorry if this is confusing , tried to explain as best I could)