WordPress really simply exists as a subsidiary of Automattic, nothing more, nothing less. It's very obvious once you begin to dabble in the WordPress ecosystem.
Yeah, I get: "Fatal error: Uncaught Error: Call to undefined function set_cookie() in /var/www/thespacewar.com/index.php:58 Stack trace: #0 {main} thrown in /var/www/thespacewar.com/index.php on line 58"