This is not addressing my criticism. He is saying that if objective morality existed and you dont like it, you should ignore it. I am not saying that objective morality exists or not, but addressing the logic in hypothetical world where it does exist.
You can both believe that there is no objective morality, and think that if objective morality existed then you should follow it. my criticism is - he saying that if objective morality existed and you dont like it, you should ignore it. thats not logical.