I think the alleged performance improvements are only an illusion. The device still has to use data and electricity, in fact more because it is fetching a bunch

I think the alleged performance improvements are only an illusion. The device still has to use data and electricity, in fact more because it is fetching a bunch of things you probably don't want. Link prefetching is already a thing, so I don't see why we need another standard to resolve this. Also the privacy argument is moot, I believe. In the questionable example of the AIDS patient, you are instead trusting Google with this info. That is not any better to me. I'm a front-end developer and I see so many sites bogged down with many analytics and tracking providers, some multiple times. I can't help but feel like AMP is an attempt to maintain the tracking and analytics status quo, while giving the illusion of performance, instead of just chilling out on the multiple redundant client-side analytics.