Ok, well, without knowing what are the underlying issues causing your ED, I cant comment wether it would help or not.
I dont have ED but have been in several chat groups / online forums where various issues involving ED have been discussed, Ive also tried this specific therapy just out of curiosity... and know of various other options which... depending on your issues, would offer a better (ie provide you w more regular harder fuller wood) solution for lack of wood.
I would rank this at a idk, mid-level as far as results. It works, but there are better options out there.