while i agree with you there are many reasons for drug use. its likely the wikipedia article linked also applies subconsciously, so while they tellyou/think they do it for anxiety they may do it for a host of other reasons without fully knowing themselves. We all do this with many aspects of life, just pointing it out.

Yea fair point, it's indeed a lot easier to look at surface level reasons and take them at face value, while instead we should be critical of that. Good point.