Top Ten Artifacts episode - Authentification Bias factor

Saw this episode recently, and once again had to shake my head at the fact that Todd Dissotel was the so-called scientist enlisted for possible authentication of an elongated skull for helping to prove the Ancient Alien theory possible.

Dissotel has been seen to openly mock fringe theory subjects, so why exactly is anyone supposed to give him the benefit of the doubt when it comes to the objectivity of any "results" he provides?

And speaking of those results, who exactly is it that is doing the extended testing and deciding whether such things are authentic? For example, Dissotel was also once involved in a tv series where authenticated evidence of Bigfoot was required to win the show. The "only problem" with the authentification process being used was...the scientific community has never admitted that any Bigfoot evidence ever submitted is valid, so there is conveniently nothing for any new evidence to be compared TO as a means of authentification.....or in other words, a Catch-22 system set up to automatically fail validation of all submissions of new evidence.

If they are both any kinds of researchers AT ALL, both Dissotel and Giorgio would know this, so why the big production with no mention that the currently-in-place authentification process is ALWAYS going to result in a negative and the unspoken rule to pay no attention to the man behind the curtain? Sad.