I expect Richard's memeset has understanding of all your points that doesn't move his current position. You're probably exposing him to arguments he has already encountered, so there's little point in expecting a different result. I'm not saying that Richard can't be moved by argument, just not by standard argument that is already known to have failed to move him. He even probably "agrees" with a lot of your points, just with a different and more sophisticated understanding than yours.
On the other hand, it might work for the benefit of more naive onlookers.
The intent of my comment wasn't to convince Richard (I never do that), but to sharpen our points and make him clarify whatever genuine insight he possesses and we don't.
In You Provably Can't Trust Yourself, Eliezer tried to figured out why his audience didn't understand his meta-ethics sequence even after they had followed him through philosophy of language and quantum physics. Meta-ethics is my specialty, and I can't figure out what Eliezer's meta-ethical position is. And at least at this point, professionals like Robin Hanson and Toby Ord couldn't figure it out, either.
Part of the problem is that because Eliezer has gotten little value from professional philosophy, he writes about morality in a highly idiosyncratic way, using terms that would require reading hundreds of posts to understand. I might understand Eliezer's meta-ethics better if he would just cough up his positions on standard meta-ethical debates like cognitivism, motivation, the sources of normativity, moral epistemology, and so on. Nick Beckstead recently told me he thinks Eliezer's meta-ethical views are similar to those of Michael Smith, but I'm not seeing it.
If you think you can help me (and others) understand Eliezer's meta-ethical theory, please leave a comment!
Update: This comment by Richard Chappell made sense of Eliezer's meta-ethics for me.