Has this turned into "why masturbation will make you go blind" thread?
Either you have someone in your life fulfilling your needs or you don't. Maybe you have someone and they aren't. The means to relieve your biological need isn't the source of the addictive behavior, your biology is the source of it. You are born to do this.
This whole notion of shaming sex is what killed this girl in the first place.
It's not really that simple.
Porn addiction isn't the same as "I must have sex, even if that means being adulterous, whenever I feel like it".
Having an unhealthy porn addiction is probably more damaging, to your psychological self, than being a slut or an adulterous slut.
You are not born to become a porn addict. You may have a high libido, but that doesn't lead to porn addiction. A high libido, an urge, and no partner to be had, can be settled with masturbation without porn.
Now, one might be born to become an addict. I'd argue I have an addictive personality. Having a high libido and an addictive personality could lead to such a porn addiction, but there's a billion paths that combination could lead to, many not even involving sex or sexual release in any fashion.
However, I feel a need to treat this subject like gambling.
It is not in the best interest of everyone to totally ban, get rid of, or otherwise trash the porn and adult entertainment industry due to addicts and issues with the entertainers.
Most can be responsible adults about these things.