This was previously submitted[0] and deemed "unconfirmed". Does it showing up on the TempleOS page make it any more official? Who runs the website in his absence to make this update?
Taking a shot at people with whom you disagree undermines your message. What might have been thoughtful is now a diatribe based on a stereotype.
Though Wikipedia already has such a link confirming it. I don't think you need to prove it.
Edit: Or did. I can't find it now. I was sure there was a really short page for him on Wikipedia when I looked the other day. At the moment, he only appears on their disambiguation page without a page of his own. It also shows a death year of 2018.
(I will leave it as an exercise for the reader to log in to FB and search for his name.)