Only set the pmpro_visit cookie for logged-in users

my_pmpro_set_visit_cookie_logged_in_users_only.php

<?php
/**
 * Only set the pmpro_visit cookie for logged-in users.
 * Anonymous page views stay fully cacheable.
 *
 * 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 my_pmpro_set_visit_cookie_logged_in_users_only( $should_set ) {
	return is_user_logged_in();
}
add_filter( 'pmpro_set_visit_cookie', 'my_pmpro_set_visit_cookie_logged_in_users_only' );