Cobra is wrong that if you tell people to "meet real women" or scold them they will suddenly start talking to women and have more White children.
Most of those people who want a succubus either have social anxiety/depression or other problems that make them impossible to meet "real women" or they simply don't want to get divorce raped in the courts.
Do you prefer those people to just jerk off to porn or to have a relationship with a loving succubus who can guide them even spiritually? Because I can tell you, they've been told hundreds of times "go meet real women, bro" by people who don't understand them. Cobra telling them again or removing the Succubi/Incubi page from JoS won't persuade to do anything like that, they will only go back to jerking off to porn.
HPHC is not wrong in doing this, because he has to guard against the reality of possible delusions here. Some people are saying Demon partners aren't real, and this isn't true either, however there are also many confusions about this topic, which HPHC had to make known.
Yes, simply telling people to do something does not make it happen on its own, but HPHC was not implying that. He, of all people, is aware of how to use energy to transform our souls, and is also aware of the reality that people have genuine obstacles in their path concerning relationships. What he said was done with awareness of these obstacles, not in ignorance of the poor situations of some people.
If you get a succubus, then what would you do? You would have to build up your astral senses and work on your relational skills, just as you would have to put effort into a real partner. In this sense, it is actually easier to have sex with a human woman than a Succubus, and therefore porn is still a potential source of time/energy waste.
As others have mentioned in this thread, you or others should certainly use energy to improve your romantic success, and this makes it way easier to break negative patterns concerning anxiety, porn, dating, and so on.