> If Google allowed arbitrary pages in the carousel, and then preloaded those pages, then BBC and BuzzFeed could insert trackers that let them know what you se

> If Google allowed arbitrary pages in the carousel, and then preloaded those pages, then BBC and BuzzFeed could insert trackers that let them know what you searched for even if you never click on a result. There's nothing you can do with the carousels that they can't do by just parsing the content or meta tags they could have defined. And when you click on the carousel, it could have redirected to their page. And before you talk about the "speed" of preloading like I've seen this argument over and over again on AMP threads, AMP could have defined an HTTP header which would have made the browser understand it's an AMP page and load the cached AMP JS (among other stuff like refusing to load non-AMP content), there's no technical need for an AMP server.