Schizos don't understand technology. The amount of schizos who have a brain hemorrhage when they see contrails in the sky and spaz out about "chemtrails" is a testament to that. Of course, many wrong and incorrect statements have sometimes a kernel of truth. While it is not the case that the entire internet cannot be shut down, government have compelled ISPs in their own countries to shut off internet access. This happened in Egypt, for example, way back in the Arab Spring. Governments more often than this, however, compel ISPs to block sites instead, and they accomplish this in a way that would usually require a VPN to circumvent. Pakistan, Turkey, and China are notorious for this.