social stigmas work locally, AI agents contact globally, there are only two ways social stigma is going to really work:

1. If an AI agent contacting people becomes big enough news that everybody the operator know reads about it. So AI agents asking people to send it child porn seems an unlikely edge case, but sure if that happens the person whose agent it is will get the social stigma.

2. If the AI agent accesses the owner's contacts list and starts asking for people to send it money so it can complete its task.