I wouldn't say there is no such thing as a chemical imbalance. Just ask George Floyd. He was highly chemically imbalanced during his last moments on earth. What they have done, is what they have always done. They have taken a complex issues, and dumbed it down so much as to create a medium for exploitation.

As for those mentioned drugs. They don't mask the problem. They just straight up get you high. And people, young adults in particular, do not usually complain about being high.