How to Change WooCommerce Product Tags to Category-Style Checkboxes

This WooCommerce snippet allows you to change product tags to category-style checkboxes, displaying the Product Tags meta box as multiple select checkboxes, similar to Categories. It leverages WooCommerce taxonomy filters like woocommerce_taxonomy_args_product_tag for modifying default Category & Tag taxonomies.

<?php
function category_metabox_format_for_tags( $args ) {
    $args['hierarchical'] = true;
    return $args;
}

add_filter( 'woocommerce_taxonomy_args_product_tag', 'category_metabox_format_for_tags' );