functions.php

<?php

add_filter( 'gform_form_post_get_meta', __NAMESPACE__ . '\\enforce_gravity_forms_anti_spam_honeypot' );
/**
 * Enforce anti-spam honeypot on all Gravity forms.
 *
 * @param array $form The current form to be filtered.
 * 
 * @return array
 */
function enforce_gravity_forms_anti_spam_honeypot( $form ): array {
	$form['enableHoneypot'] = true;
	return $form;
}