I read that this morning. Interesting. It didn't really surprise me, although the extent of cocaine use described is more than I would have imagined. Many years ago when I was better acquainted with the underside of society than the respectable OAP I am now, cocaine was relatively expensive.
I knew people who were into it fairly deep. These people did not seem happy. A dealer friend induced me to try it, but for whatever reason it didn't really register above my usual pot+alcohol regime, and it seemed like a waste of money better spent on moar pot+alcohol.