If someone feels uncomfortable with this book (which I can understand) then you can still see it as a phenomena of popular culture and bohemianism.
French artist Serge Gainsbourgh recorded some very
Lolita-style songs with his own daugter. Gainsbourg loved to shock people with this dandy style. As long as people live which are shocked by this, people will record (and love) such songs..
I wasn't aware that this book lead to discussions in the past. So maybe a rule might be a good idea. I don't know.