He did ask the "obligatory" question of whether Hank and Willie ever took anything. He mentioned something called "red juice". Both, of course, vehemently denied ever taking, or seeing anybody else taking anything. They said they didn't need to and couldn't afford to anyway.
I have heard, however, that there used to be rampant amphetamine use in the clubhouses in the old days. It was out in the open, like "candy" in a bowl, or coffee marked "leaded" or "unleaded". Who really cares anyway? I love to watch the stars perform, and I couldn't care less what they are putting in their bodies.