Or, would you be willing to speak more generally about certifications, and which, if any actually DO get attention from hiring managers in the security field?
Not taking Cody's classes wouldn't harm you here, or at any other high-end firm that I'm aware of. But actually taking it would signal a particular interest and engagement with appsec, which is something I would pay attention to.
If there is some other forcing function you have to get you to actually practice software security and find vulnerabilities, that too would be valuable.
So do courses like this catch your attention, or are you exclusively interested in the takers of this particular course that happens to be offered by someone you personally know? I'd appreciate the clarification.