Heh, it's funny watching people, like the one above you, say "This thing is addictive because it is a real object, but this digital object cannot be addictive at all". The argument is so illogical you begin to doubt you're talking to a real person.
I never made that claim, and in fact believe the opposite. I simply disagree that heroin is a drop in replacement as a mental model. The differences between the heroin trade and YouTube are meaningful. For example, one is a physically addictive illegal drug that is a commodity exported by certain foreign nations while the other is a digital platform that makes money by ad sales and is a monopoly. Both can be addictive, but they are not the same thing.