FWIW here is an example today with a large block of code (that should pass any threshold) that the plugin did not catch:
which then prompted an offshoot discussion about just this onboarding / code-formatting topic, which the OP seemed to take some offense to.
Is the plugin just broken, or needs an update? Regardless, I do still think a mandatory “format this code” challenge before being allowed to post is a valuable addition to “auto-detection”.