Disable Gutenberg by Custom Post Type

disbale_gutenberg_by_cpt

/**
 * Disable Gutenberg by CPT
 *
 * @param  Object $current_status Current status.
 * @param  string $post_type      Post type.
 * @author ElPuasDigitalCrafts
 */
function prefix_disable_gutenberg( $current_status, $post_type ) {
	if ( 'speakers' === $post_type ) {
		return false;
	}
	return $current_status;
}

add_filter( 'use_block_editor_for_post_type',  __NAMESPACE__ . '\prefix_disable_gutenberg', 10, 2 );