that's it?

	public function is_gutenberg_active() {

		$version      = false;
		$gutenberg    = false;

		if ( version_compare( $GLOBALS['wp_version'], '5.0', '>' ) ) {
			$version = true;
		}

		if (  $version ) {
			$gutenberg = true;
		}
		return $gutenberg;

	}