Allows non-members to view comments and comment on restricted posts

pmpro-open-comments-non-members.php

<?php
/**
 * Allows non-members to view comments and comment on restricted posts
 * 
 * You can add this recipe to your site by creating a custom plugin
 * or using the Code Snippets plugin available for free in the WordPress repository.
 * Read this companion article for step-by-step directions on either method.
 * https://www.paidmembershipspro.com/create-a-plugin-for-pmpro-customizations/
 */
function make_pmpro_comments_open(){
	remove_filter("comments_array", "pmpro_comments_filter", 10, 2);
	remove_filter("comments_open", "pmpro_comments_filter", 10, 2);
}
add_action( 'init', 'make_pmpro_comments_open' );