The girls are the women who try to connect with the man who is going through this learning/carving/feeding process. When he's in the asylum, carving off what doesn't belong and making a general mess of things, there will be women who couple with him. A reflection on why things didn't/couldn't work out...some girls wander by mistake into the mess that scalpels make.
I think the reference from Eldritch echoes this, lamenting lost love and explaining it with the conviction that our hero is a whirling mess, though not without purpose, if not a destination.
It is, ultimately, a song about honest and painful efforts, falling short of becoming who you sought out to be, and the futility of even the bravest journey.
I win.
