While I agree with your points Wildcard and Quake (and I know someone on steam who reverse engineers TF2's code and reports security flaws and bugs to Valve), it's sort of pointless to berate the OP about releasing a closed source project. He could have just not released it (which is questionable if that is better or worse).
The best you can do is just not use it and encourage others to not use it, and let the reverse engineers rip it apart themselves. Other than that, just leave it alone.
Although quake is in fact right... for a plugin that does something trivial like this, it is interesting why you feel you should keep the code a secret, when bigger projects like reddit.com have their code freely posted on github.
To each their own. Use it or don't use it, but no point making a huge fuss about it. Open source will eventually prevail over closed source solutions.