These tricks have always been the bread and butter of spammers and scammers: Make users think they have clicked through to NYT when they are actually still on your site. Show NYT's content on your own site in an iframe.
Except NYT put their content there and has near full control of it. It's just hosted (and paid) by someone else. It's just like you using my server as a mirror. You can take it down or edit it at any time you want. So your example makes no sense.
This is a mutually beneficial setup. Google provides fast servers all across the globe for free and includes it in the AMP carousel. There's value both ways, and user gets a much faster experience.
Yes, there are a couple UX that are a bit rough, but looking at this change, it seems like they are actively working to improve it.