Commenting on the first myth, Yudkowsky himself seems to be pretty sure of this when reading his comment here: http://econlog.econlib.org/archives/2016/03/so_far_my_respo.html. I know Yudkowsky's post is written after this LessWrong article, but it still seems relevant to mention.
He is a bit overconfident in that regards, I agree.
Following some somewhat misleading articles quoting me, I thought I’d present the top 9 myths about the AI risk thesis: