You are missing the point mate. The key word here is 'credibility'. The man wrote two books about 'Bigfoot' and than goes on to write 8 books about missing people. Like the quote stated:
"Paulides attributes mysterious, unspecified causes to these disappearances, while data analysis suggests that these disappearances are not statistically mysterious or unexpected."
"Kyle Polich, a data scientist, documented his analysis of Paulides' claims in the article 'Missing411' and presented his analysis to a SkeptiCamp held in 2017 by the Monterey County Skeptics. He concluded that the allegedly unusual disappearances represent nothing unusual at all, and are instead best explained by non-mysterious causes such as falling or sudden health crises leading to a lone person becoming immobilized off-trail, drowning, bear (or other animal) attack, environmental exposure, or even deliberate disappearance. After analyzing the missing person data, Polich concluded that these cases are not 'outside the frequency that one would expect, or that there is anything unexplainable that I was able to identify."
I really don't care what you believe. You obviously enjoy this topic and dedicated many hours to it. Your mind won't be changed by an alternate point of view. Same issue I have when discussing the existence (or non-existence) of God with other members.