Redirect external links for phpbb 3

It is very strange that similar ready-made plugins do not exist. It seems that everyone adores SMO, spammers and moderates their forum all day long before losing their pulse.
And the solution is quite simple:
Install the plugin Prime Links
After that you need to make small changes to the plugin code:
Open includes / prime_links.php, find the line:
define('EXTERNAL_LINK_PREFIX', ''); // Example: 'http://anonym.to?'
Replace with:
define('EXTERNAL_LINK_PREFIX', 'http://_/_/go.php?'); // Example: 'http://anonym.to?'

In the forum folder, create a go.php file with the following content:
<?php
if (isset($_SERVER['QUERY_STRING'])) Header('Location: '.$_SERVER['QUERY_STRING']);
?>

That's all.
Optionally, add to the robots.txt file
User-agent: *
Disallow: /_/go.php

Plus, everyone must have the correct robots.txt for the phpbb forum, which should already contain the lines:
Disallow: /_/memberlist.php

PS and why there is no blog PHPBB, and wordpress is?