Exclude posts by taxonomy

function pm_is_excluded($post) {
    $excluded_taxonomies = array('category2', 'post_tag');

    foreach($excluded_taxonomies as $taxonomy) {
        $terms = get_the_terms($post, $taxonomy);

        if(!empty($terms) && !is_wp_error($terms)) {
            return true;
        }
    }

    return false;
}

function pm_do_not_detect_custom_permalinks($element_id, $uri_parts) {
    global $permalink_manager_uris;

    if(is_numeric($element_id) && !empty($uri_parts['uri'])) {
        $is_excluded = pm_is_excluded($element_id);

        unset($permalink_manager_uris[$element_id]);
    }

    return (!empty($is_excluded)) ? false : $element_id;
}
add_filter('permalink_manager_detected_element_id', 'pm_do_not_detect_custom_permalinks', 99, 2);

function pm_do_not_change_permalink($permalink, $post, $old_permalink) {
    return (pm_is_excluded($post)) ? $old_permalink : $permalink;
}
add_filter('permalink_manager_filter_final_post_permalink', 'pm_do_not_change_permalink', 99, 3);

function pm_hide_uri_editor() {
    global $post, $current_screen, $permalink_manager;

    if(!empty($current_screen) && $current_screen->base == 'post') {
        if(pm_is_excluded($post)) {
            remove_filter('wpseo_breadcrumb_links', array($permalink_manager->functions['third-parties'], 'filter_breadcrumbs'), 9);
        }
    }
}
add_action('add_meta_boxes', 'pm_hide_uri_editor');