I think there is something to the eastern traditions that say that abstinence is necessary to build up energy. I do not believe it is necessary, but, I do think and feel, from my own recent experiments with energy manipulation in the chakras, that sexual energy (or any energy) can actually be redistributed and re-purposed for other uses.
Im thinking that feeling horny is an energy build up in the sacral chakra. It seems that you can redirect that energy to the adjacent chakras where it is equalized between them all.
Try this yourself by sensing the chakra where energy is the most powerful for you. It can be different for different people, but if theres enough of that energy can you actually feel a physical sensation of that energy. For instance if your most active one is the solar plexus one, both imagine, and make yourself feel, a tunnel formed between the solar plexus and heart chakra. See the solar plexus as a yellow sphere, and the heart as a green sphere. Imagine a cylindrical tube connecting them, mixing the colors between the two on a smooth gradient.
Visualize but FEEL this, and the energy ebbing from one chakra to the other. From my experiments, the energy equalizes between the two chakras gradually as nothing else is done.
This technique can be applied to any number of the chakras all at once. The more chakras that are actively linked, the more distributed the energy becomes.
Basically you are just averaging the energy out over multiple points. More points = higher distribution / less centralization. Less energy in the sacral chakra = not as horny = less inclination to wank it.
So if your friend is a sex/wank addicted, their suspicion may actually be right in that they are constantly draining their energy from one chakra, and the others are trying to balance it out but its like a sieve that doesnt stop leaking energy, so hes constantly without “vital” energy (or whatever you would call it) and unable to perform any magickal works that would require it (all of them).
If he re-directed that energy though (which I think is the whole point of the “abstinence” thing in some eastern traditions), who knows what he could accomplish. Energy is energy, its just about which device you are directing it to to use it.