I’m not a YouTube commenter, so I don’t have a horse in this race, but it seems like Google is in a very good position to know if a commenter is AI or not. It is very likely that their YouTube account is tied to a Gmail account… they know if that’s being used by a person or not.

Google’s unwillingness to tackle the comment problems has been a problem for years, long before AI. I recall seeing some videos on some scripts a guy wrote to flag and filter spam and bots on YouTube comments. Something Google could and should have done a long time ago. If they have done anything at all recently, it’s been due to public shaming from top creators on the platform.