duplicate code related to catalog/startup/* and framework.php

I just noticed that we have duplicate code in catalog/startup/* and framework.php which are triggered on both files. for example:

catalog/startup/error.php $this->registry->set('log', new \Opencart\System\Library\Log($this->config->get('config_error_filename'))); catalog/startup/session.php $session = new \Opencart\System\Library\Session($this->config->get('session_engine'), $this->registry); catalog/startup/setting.php

// Url
$this->registry->set('url', new \Opencart\System\Library\Url($this->config->get('config_url')));

and

system/framework.php

$log = new \Opencart\System\Library\Log($config->get('error_filename')); 
$session = new \Opencart\System\Library\Session($config->get('session_engine'), $registry);
$registry->set('url', new \Opencart\System\Library\Url($config->get('site_url')));

Is there a reason for this?