"can't" is incorrect. As your name server, they can decide to turn the reverse proxy/caching at any point in the future, write an obscure blog post about how th

"can't" is incorrect. As your name server, they can decide to turn the reverse proxy/caching at any point in the future, write an obscure blog post about how this is the best solution for all (a post that gets 2 comments on HN due to other news that week), and you'd only find out about it 11 months later in a thread like this one.