[chesser]

"a pejorative modifier to refer to a person who experiences something vicariously rather than first-hand, or to a casual critic who lacks practical experience"

Ironically the most fitting application would be to say that they're armchair quarterbacking their own database administering.

[burgerbrain]

Unless you work for github, you lack practical experience in github's internal operation.

[chesser]

Fortunately, there is this thing called "science" which means we can understand things about the world regardless of where we live. As Dawkins would say, there is no such thing as "Chinese Science" or "French Science", just science. Similarly, there is no such thing as "Github MySQL" or "Github separation of production and development systems" in that same sense.

These are categorical mistakes.