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The irreversible global catastrophe is imperialist militaries massacring people with little risk to themselves. 
The irreversible global catastrophe is assembly line robots at the Toyota plant becoming sentient and going on a freaking epic terminator style mass shooting and enslave everyone except me 
Capitlaism is an evil AI that runs off people and is overclocking the planet to make increment numbers. This is the exact scenario one of their ai boogy men is based on. That they can't see a paperclip maximizer situation because it doesn't have enough led lights is infuriating
Money maximizer instead of paperclips
I was recently on one of the discords for them and used the term paperslip maximizer. They kicked me out for being a comunist.