Yes it’s a genuine drug problem.
My husband is the same now, (for the last six months) going out all hours drinking and when he has a drink he has cocaine. He doesn’t do it without the drink. Three times he goes out per week and comes back the following day in a state.
I feel the friends he associates with are a cause of the problem, then the alcohol and finally the cocaine.
But at the end of the day my husband can say no to going out. No to the drink and no to the cocaine. He used to.