If we accept the premise of the Dead Internet as true, this is a systemic issue which needs to be dealt with on a systems-level (i.e. economic, social and political), and not by the very architects of this flawed system adding their own little patches —which will just result in an AI arms-race— nor by improving the "media literacy" of the World population so they know how to deal with this broken system —a new arms-race.
Avoiding the consequences of the Dead Internet should not rely on saving the current social-media-attention-economy-internet from AI-bot infestation and expecting people to be "educated" against it. It should rely on either fully rethinking, overhauling and/or shutting down this social-media-attention-economy-internet, or alternatively on helping society to abandon-ship and let this bot-infested internet go the way of Myspace and Digg in terms of social relevance. The one thing that AI content cannot do is get in the way of society's ability to touch grass.