I have kind of a unique experience in this area. I have suffered from male erectile dysfunction for most of my adult life. But I have found some relief from the symptoms if I have had a few drinks.
Erectile dysfunction is as much a mental problem as a biological problem. I have trouble achieving an erection becomes of some kind of block in my mind. If I have had a few drinks that block does not seem to be as strong. In my diminished capacity it becomes less of an issue for me.
I would not recommend that guys with ED go out and get drunk, but if you can find ways to take the pressure off of your performance it helps a lot.