How to Disable / Stop RSS Feeds in WordPress - SEO Friendly Way

How to Disable / Stop RSS Feeds in WordPress 

Anyone who uses Wordpress may want to stop RSS feeds to stop spammers and scammers.  The common approach is the following function added to functions.php : 

function fb_disable_feed() { 
  wp_die( __(‘No feed available,please visit our homepage!’) );
}
add_action(‘do_feed’, ‘fb_disable_feed’, 1);
add_action(‘do_feed_rdf’, ‘fb_disable_feed’, 1);
add_action(‘do_feed_rss’, ‘fb_disable_feed’, 1);
add_action(‘do_feed_rss2, ‘fb_disable_feed’, 1);
add_action(‘do_feed_atom’, ‘fb_disable_feed’, 1);

What's wrong this function?

Well, it returns a HTTP Status code of 500. 

500 (Internal server error)

The server encountered an error and can't fulfill the request.

Not terribly SEO friendly. Too many 500 errors call into question the reliability of that site. Google doesn’t want to send users to a site that ultimately times out and doesn’t load.

This is a better written code snippet and will redirect to homepage.

// Remove feed links from the header
add_action( 'wp_head', 'custom_remove_feed_links', 1 );
function custom_remove_feed_links() {
// Remove feed links from the header
remove_action( 'wp_head', 'feed_links', 2 );
remove_action( 'wp_head', 'feed_links_extra', 3 );
}

// Redirect all feed requests to the homepage
foreach ( array( 'rdf', 'rss', 'rss2', 'atom' ) as $feed ) {
add_action( 'do_feed_' . $feed, 'custom_redirect_feeds', 1 );
}
unset( $feed );
function custom_redirect_feeds() {
wp_redirect( home_url(), 302 );
exit();
}

// Delete feed rules
add_action( 'init', 'custom_kill_feed_endpoint', 99 );
function custom_kill_feed_endpoint() {
global $wp_rewrite;
$wp_rewrite->feeds = array();
flush_rewrite_rules(); // Delete this line after running once
}