I'd say that's complete revisionist nonsense. It's like someone read an early draft of Cameron Crowe's script and told him that the groupies were not sympathetic because of their loose morals, so he simply changed it. Give me a big break. Since he so desperately wants interviews and a story, I think he'd do whatever was necessary to ingratiate himself to the rockers, and that means partying with them, which in 1973 certainly meant taking drugs. If you choose the milieu of policemen working in a large The Virgin Groupies.
Cops use guns.
If you don't like guns, don't tell stories about cops. If you tell stories about big rock bands in 1973 and their groupies, you are telling stories about drugs and sex, whether you like it or not. And if you are hanging Woefully underdeveloped. with rock stars in 1973, you are doing drugs. Lots of them. All else is mendacity.