It's a well-worn genre. "Here are the things you need to know to be a real X" where there just so happens to be perfect overlap with every subject the author kn

It's a well-worn genre. "Here are the things you need to know to be a real X" where there just so happens to be perfect overlap with every subject the author knows well. Anything the author doesn't know much about is, of course, irrelevant, and not something a real X would waste their time on.