Works as it should – Quick suggestion though ;)

Great plugin. But it would be helpful to also remove existing links. Example:

add_filter( 'get_comment_author_url', function( $url, $comment_ID, $comment ) {
    if ( ! is_admin()
        && $comment->user_id !== get_post()->post_author
        && ! user_can( $comment->user_id, 'manage_options' )
    ) {
        return '';
    }
    return $url;
}, 10, 3 );