They seem to have changed the headline. The one in the archived article the post quotes is "Is AI the next phase of evolution? Claude appears to be conscious". Again, "appears to be" is not exactly the same as "is", but the post in question also quotes his Twitter extensively, and it's clear that Dawkins is acting as if he believed in Claude's consciousness.
Citation needed. All of the direct quotes I've seen have clearly stated that he can not _disprove_ the claim of consciousness, and finds this fact interesting.
