Sure that’s one example but I think there’s various things like this. You have to make sure that investigators can also be made undercover where makes sense (if it’s possible to obfuscate malfeasance) and rotate the inspector’s physical location (to avoid potential for corruption due to personal relationships). You always still have other corruption vectors (eg getting buddy buddy with the inspector’s boss and influencing them indirectly). It’s an unsolved problem but you can always do better than nothing.