The anxiety spreaders are a political phenomena. It's mostly about blaming the "other side" and framing it as the cause for world collapse. Those people don't actually believe a catastrophe is going to happen. They already think they are being productive by hacking the political spectrum. In other words, imbecile automaton panfleteers.

What you described has nothing to do with schizophrenia. You are mixing up two distinct behaviors by a single theme (world ending catastrophes).