Google does not have control over WHATWG. That's the point of its existence. Javascript can fail to load for a lot more reasons than just the user disabling it

Google does not have control over WHATWG. That's the point of its existence. Javascript can fail to load for a lot more reasons than just the user disabling it. Noscript is the only way to let the user know that's occurred or to ensure some functionality doesn't break. In fact Google Analytics uses a noscript tag containing an iframe as a fallback to keep the data flowing even when stuff like a content security policy or bad network request causes the javascript to fail.