Yep. I believe if you caught Charlie at the right moment, he would freely admit he had a drinking problem, whereas Elvis would never admit to anyone that his pill use was an issue. The more I think about it, I think it must have been Elvis who removed the line. If anyone else had suggested it (even Bienstock, Diskin, or Parker) they would be running the risk of setting off Elvis' anger by making him think they were alluding to his own problem in an oblique way: "What do you mean I should take out that line about the pills? Are you implying something about MY medicine?" Elvis was mercurial and incredibly defensive about his drug use (didn't he once point a gun at Red when he tried to bring up the subject?). I would bet everyone around Elvis would have been afraid to even mention pill abuse in any context, even a song lyric, for fear Elvis would get mad.