Science as a method is a universal tool though. And if one branch needs protection from intruders by the other critical scientist.. Maybe it just ain't science, but a religion performing cargo cult mimicry for clout.
For example, a scientist who starts talking about politics is usually well outside his/her area of competence. A scientific method does not seem to lend itself to solving political problems.
If a scientist who is an expert in one field decides to make videos on other fields, they are not applying the scientific method, they are doing the same thing any YouTuber does.