The poster was quite clear on the type of drugs being referred to.
"You mean 5% this very moment? Today? This week? This year? Ever?"
Around 5-6% of those 12 and older smoke marijuana at least once per month. I would refer to such a person as a marijuana user.
"Even if the percentages don't represent a majority in any particular society, it is not abnormal behavior.
Illegal recreational drug use is not the norm. I think you're playing word games here, and I don't know why you are doing that. I didn't think that was your style.
And particularly since I'm not playing word games. The poster said drug use was deviant.
Most adult people in the world have used "drugs" (mood altering substances) in their lives. Most have done so many, many, many times.
Clearly it is not deviant behavior.