You could try to prove me wrong, but from everything I've seen, I think the consensus is that it will always be possible unless there's a complete overhaul of h

You could try to prove me wrong, but from everything I've seen, I think the consensus is that it will always be possible unless there's a complete overhaul of how browser scripting works. JavaScript has almost complete control of your browser, and if you try to sandbox it or mitigate certain fingerprinting techniques (by disabling/nullifying/randomizing things), people will almost always find some workaround. And the more restrictive you get, the more websites you'll break, since many legitimate code relies on those features (like screen resolution, device type, browser language, browser timezone, what formats and features the browser supports).