Sexual orientation being immutable or not really isn't that big a deal. Not hating people because of their immutable characteristics was chosen as relatively uncontroversial manifestation of my axiomatic belief of innocence by default. People are good, unless they do something bad. Probably should have phrased it as the more accurate "non-harmful" characteristics, in hindsight.
Once your philosophy is consistent, there's little room for philosophical debate. Faced with someone with the philosophy of "Destroy anyone not of my ethnic group", the course of action isn't to debate philosophy with them. It's to shoot them. That's why it's important to have a consistent ideology: So you know when the time for words has ended. At that point, "Punch that Nazi" is a good start.
Once your philosophy is consistent, there's little room for philosophical debate. Faced with someone with the philosophy of "Destroy anyone not of my ethnic group", the course of action isn't to debate philosophy with them. It's to shoot them. That's why it's important to have a consistent ideology: So you know when the time for words has ended. At that point, "Punch that Nazi" is a good start.