For people like me that hadn't heard bout the theory.
"The dead Internet theory is an online conspiracy theory that asserts that the Internet now consists mainly of bot activity and automatically generated content that is manipulated by algorithmic curation, marginalizing organic human activity"
Here's the summary for the wikipedia article you mentioned in your comment:
The dead Internet theory is an online conspiracy theory that asserts that the Internet now consists mainly of bot activity and automatically generated content that is manipulated by algorithmic curation, marginalizing organic human activity. Proponents of the theory believe these bots are created intentionally to help manipulate algorithms and boost search results in order to ultimately manipulate consumers. Furthermore, some proponents of the theory accuse government agencies of using bots to manipulate public perception, stating "The U.S. government is engaging in an artificial intelligence powered gaslighting of the entire world population". The date given for this "death" was generally around 2016 or 2017.The theory has gained traction because much of the observed phenomena is grounded in quantifiable phenomena like increased bot traffic. However, the idea that it is a coordinated psyop has been described by Kaitlin Tiffany, staff writer at The Atlantic, as a "paranoid fantasy," even if there are legitimate criticisms involving bot traffic and the integrity of the internet.