Signed exchanges guarantee that the content cannot be modified by the cache, such as ad injection. Google has never injected ads into any cache served AMP docu

Signed exchanges guarantee that the content cannot be modified by the cache, such as ad injection. Google has never injected ads into any cache served AMP document (technically if the publisher uses AdSense, this is false, but that's not the point you are making). It's difficult to follow what definition of theft is being suggested. The cache does not modify the document rendering, it's essentially a proxy. In a semantic sense, this is no different than your ISP delivering the page or your WiFi router.