> What do other countries do who don't have Verisign to lean on?
They lean on their ISPs, see Spain and the La Liga controversy.
That's the correct way, because it applies only to residents of that jurisdiction. Texas should be able to prevent their local ISP's from showing illegal content, but not control what people see in other parts of the country/state.
But that, more appropriately, only affects internet users in that country (ignoring the cloudflare network blocking that causes various other sites to also be blocked).
This appears to basically wipe the site from the entire internet, for all countries.