I think the term originated out of bodybuilding communities and is used in a humorous/self-deprecating way to label those "just trust me, bro" types of argument

I think the term originated out of bodybuilding communities and is used in a humorous/self-deprecating way to label those "just trust me, bro" types of arguments. It's a bit weird seeing it used as a general term to refer to pseudo-science, but it feels appropriate under the original context.