The only 'evidence' Kenn ever has, uses, or feels he needs is the default "They are using it so it must be the best."
He has this defacto belief that if a CiG dev has made a decision then, because they are a dev and its their game, it is apparently the only/best/most logical reason to do it that way - or the CiG dev would know that and would have changed it accordingly. CiG devs are clearly infallible and perfect in their decision making and are so far above the rest of us humans that they would absolutely change their solution/tech if /they/ felt there was a better solution. But since they haven't chosen any other solution - then this must be the best one.
"Why is this better?" - "Because CiG are using it so it must be so." Perfect proof! What more justification could anyone need - right?