Is it worth the risk, though? AI-generated content has become good enough that it isn't always immediately obvious that it is AI-generated. This means some poorly-paid QA tester isn't guaranteed to flag it, so it might very well end up slipping into the final release - as has already happened multiple times now.
Need a placeholder four-headed dog? Grab a dog model from any random library, cut off its head, add four Blender Cubes on stalks, and you're done. Less than five minutes of work and it will stand out as "obviously a placeholder" during QA.