Lazy image load in the updated WordPress releases

Lazy image load in the updated WordPress releases is outdated as it is now included, but can be still added manual code to make it better performance?

Source:

https://jetpack.com/blog/wordpress-lazy-loading/

function disable_template_image_lazy_loading( $default, $tag_name, $context ) {
if ( ‘img’ === $tag_name && ‘wp_get_attachment_image’ === $context ) {
return false;
}
return $default;
}
add_filter(
‘wp_lazy_loading_enabled’,
‘disable_template_image_lazy_loading’,
10,
3
);