It doesn't. It's fluffy, and I hate fluffy. Especially with Runes. Take the description for Hagalaz (hail), for instance:
Hagall - Slow, steady pace, no disruptions, asking for a hand from fate within a situation you do not control.
Or this one (need):
Neid - Need, desire, fulfilling those needs, love and sex magick, motivation created by distress.
And Isa (ice):
Isa - Cessation of energy, freezing an issue where it stands, cooling relationships, separation, division.
These should read more like this:
Hagall - Hail, destructive force, starvation, chaos, anger.
Neid - Poverty, nakedness, death from starvation and frost.
Isa - Freezing, immobility, ice.
None of this happy-spin garbage.
My guess is that he's using the Anglo-Saxon Rune Poem, which is happier, but I can't abide these three Runes (always in series) being any good.
What I really don't get is the obsession with sex magic here. . . I don't know *any* Runes for that!