You are making the same argument this article is trying to explain to you. Security by Obscurity is not bad because _on its own_ its not enough, its good because coupled with other layers it adds security. I have been told to remove security by obscurity layers from systems by people that don't grok this. Security was, in a few cases, reduced to nothing. Systems that have one industry standard approach only laid totally open on the Internet due to a single misconfiguration or a single CVE being published. Any other layer would have helped, however "insecure", but they were removed due to the misconception that the layers themselves were "insecure". I would go so far as to say the first layer should always be security by obscurity for any unique system. If you fire up a web server and have the first security requirement that each http request must have the header X-Wibble:wobble I promise you this layer of security will be working hard all day long. Cheap, impossible to get wrong, it's not sufficient but it works.