It’s possible even for Nazis to change. Unlikely, but we can’t rule it out. If we don’t accept reformed Nazis back into society, then they’ll stay Nazis forever.
Post WWII-Germany was an example of this in real life. And actually a very successful example. Germany wrestled with its past and built monuments to honor the Holocaust dead.
I really doubt WN would be capable of that, but I hope he does one day, for his own soul. Remember when UniformVictor tried to minister to him? That broke my heart to see. But a true Christian never gives up.