Credibility literally doesn't and hasn't matter in over a decade. Out side of corrupt academia, basically fucking no one gives a single flying fuck about credibility. Which in and of it self IS a huge problem. The majority of people don't understand what makes something creditable, the majority believe who ever says things the loudest and first to be the truth. And academia has monitized and locked shit away so hard that even if you do care as a normal person. It's more expensive and effort than it's worth for your avg person. So they just don't have reasonable access to good quality information. So most people have just been conditioned to trust anything and everything. Or become paranoid to the point of distrusting anything and everything. It's a fucking shit show.