Turn off comment feeds
Comment feeds (/comments/feed/ and each post’s /feed/) redirect to the post or home page, and their links leave the page head. Your posts feed keeps working.
<?php
add_action(
'template_redirect',
static function () {
if ( is_comment_feed() ) {
wp_safe_redirect( is_singular() ? get_permalink() : home_url( '/' ), 301 );
exit;
}
},
1
);
add_filter( 'feed_links_show_comments_feed', '__return_false' );
add_filter( 'post_comments_feed_link', '__return_empty_string' );