No worries. You are searching for answers and making sure you are getting the proper answers before proceeding. I would suggest you get a second, third, and even fourth opinions to ensure all info is correct.
No it won't. LIST focused energy does indeed damage the nerves, but trained professional will scan the nerve's condition first, adjust the energy level to match the depth of the nerve, and readjust the energy level loading just enough to tear the nerve segment that didn't heal correctly. This allows the nerve to regrow back accordingly. However, it's critical to scan the nerve first before proceeding.
ED is not just about erection quality. ED also covers tissues, nerve and blood vessel damages. ED is way too broad.
Every procedure has its risk. When your body is cut open, you are open for infections. When your bone is surgically corrected, you can get bone fragmentation that can kill you down the road. When you cut a blood vessel, you can get hemorrhaging. When you cut the nerve, you can get lifetime numbness. There are many that can go wrong on top of what can go right.