I do have (him)her on ignore, because of (her)his abusiveness primarily, and partly because of the provably false statements (s)he made when (s)he first joined. I have never commented on the quality of (his)her editing, because I know nothing of how (s)he edits, save that (s)he seems to think that CMS is holy writ for the entire world, which is also false.
No, I will not cite chapter and verse on the false statements because I don't want to be dragged in to a pointless "Tis" "Tisn't" argument with (her)him or (his)her surrogates. Others are free to worship as they please.
If you don't want to argue with him or his surrogates, you might stop sniping at him. And you are an ass for your occasional swipes at what he might have posted but you're not sure because you have him on ignore.
Your opinion on what he ever posted is just yours--and your opinion isn't worth much to me at the moment.
Also, for publishing in America, what exactly is your objection to the use of a standard like CMS? Do you really think that competent editors fly on their own opinions when editing someone else's work? Are you that arrogant?