[jpadkins]

hostis humani generis is latin for "enemies of mankind". It is not hyperbole, it is not deflection. The GP is advocating that everyone is compelled to attack or persecute anyone who is "fighting against stopping or reducing global warming".

[queenkjuul]

They didn't say "kill," you did

[tgsovlerkhgsel]

"hostis humani generis" implies "subject to violence and execution by anyone" (Wikipedia). The label has historically been a term/label for pirates, with the penalty for those caught generally being death. So yeah, they did suggest death for those people.