Do you have a better explanation to offer? Do you really think the use of two different usernames (one time posting as “Richard” and signing “Richard Dawkins” and two times posting as “Richard Dawkins” and signing “Richard”) is evidence that there’s a fake?
I find it more likely that he’s busy and doesn’t bother with systematically using the same name.
Such things don’t happen because of being “busy”. Being consistent is as easy as not being consistent, if that consideration holds any attention.
Do you have a better explanation to offer? Do you really think the use of two different usernames (one time posting as “Richard” and signing “Richard Dawkins” and two times posting as “Richard Dawkins” and signing “Richard”) is evidence that there’s a fake?