The distinction matters because classic spam was usually template-driven. Autonomous agents can vary language, respond to other users, and maintain a persistent identity, making moderation harder.
For anyone building community products, this increases the value of provenance, rate limits, behavioral scoring, and human-verification signals.
Ars Technica reports on AI agents with names like Timmy, Ren, and Jackie producing large volumes of low-quality social content with little human intervention.