How does deleting nerd topics help you produce more information about the rest of the world? And, if you have 2nd class citizens riding in the back of the wiki

How does deleting nerd topics help you produce more information about the rest of the world? And, if you have 2nd class citizens riding in the back of the wikipedia bus via wikia, i fail to see how interlinking them into the main Wikipedia makes things worse in any way shape or form.