The problem is, that line of thought isn't very useful conditioning is a thing very much so, and you can absolutely be addicted to the dopamine release. Just because it's downstream doesn't mean the porn isn't the ultimate addictor.

You can also self control your way out of addictive substances like nicotine. Only a scant few need medical intervention. Unless you're going to tell me heroin and alcohol are the only actually addictive substances that exiat. It's INCREDIBLY reductive to reduce anything that doesn't have a specific chemical addiction mechanism to "not an addiction get help lol". Yes, get help. Probably from these things called addiction therapists, that deal with things like porn addiction and gambling addiction.