I feel really bad for the person behind the "notkilleveryonism" account. They've been completely taken in by AI doomerism and are clearly terrified by it. They'll either be terrified for their entire life even as the predicted doom fails to appear, or realise at some point that they wasted an entire portion of their life and their entire system of belief is a lie.
False doomerism is really harming people, and that sucks.