One point that psychiatrists make about addictions like porn addiction is desensitization. The brain balances the feeling of pain and pleasure automatically, so when you have an abundance of pleasure over a period of time the brain will adjust itself accordingly. This leads to the addict having to pursue newer highs to feel the same pleasure as before. In the case of porn addiction, this could be newer kinks or more extreme scenarios. Many men have unfortunately suffered from erectile dysfunction and worsened relationships with real women due to porn use. This is an established problem.
It is more fulfilling and productive to direct one’s sexual urges to a real person than a phantom. This keeps one’s self more aligned with what’s real and has good chances of establishing real and productive relationships between people. You cannot establish anything real with a phantom. You cannot have children with it, you cannot have sex with it, you cannot have mutual love with it.
There is much more to be said. All I request from you is to have some humility when approaching this issue.