Asking to cyptography experts. Would it be possible to flood a discussion with AI generated slope ? The discussion itslef would not be encrypted, but would be lost in millions of other generated discussion. A "private key" mechanism would be use to identify which message are part of your real discussion.

I suppose this would be compliant with Chat Control, as message are not encrypted. But without private key, you won't be able to identify which message are the good ones.