Not trying to normalize usage in anyway. I just wonder if a behavior is well represented in a society is it still a disorder?

The behavior while under the influence should get labeled but the usage might be normal. People being angry or not taking responsibility deserves a label from the DSM. If a large population is ingesting things this might be normal.

The DSM defines substance use disorder as (roughly) a problematic pattern of substance use that produces clinically significant impairment or distress, demonstrated by at least two of eleven diagnostic criteria within a twelve month period.

It’s not a question of how well represented it is, but the effects it has on the person’s life. Drinking coffee or alcohol or taking prescription medication every day doesn’t qualify as a disorder as long as there’s no negative impact.

Note also that GP said “at one point in their lives”, not that a third or half the world has a substance problem at any given time. A five cup a day coffee addict who quit and had headaches that negatively impacted their work life could qualify, so it’s not all hard drug use either (mostly binge drinking iirc).

It might be that some sort of intoxication is the normal and abstaining from intoxication is the thing that’s normalized.