[gregable]

Without the Javascript file, the images will not load. AMP loads images using a custom element <amp-img> which has performance benefits such as lazy loading of images until they are close to the visible viewport and guaranteeing a stable layout that will not cause the elements on the page to jump around. The downside is that until Javascript is loaded, these images are not available to the browser.

[JoshMnem]

Not seeing images is better than not seeing the page at all. People who block content know that things sometimes don't load. There is no reason to block loading of the pages for 8 seconds.

[stjohnswarts]

You're probably not their target audience anyway (read ad money stream) so they don't really care if you have to wait on content or don't see it at all. Google et. al. just see you as a parasite on the system.

[JoshMnem]

It seems like the AMP delay is there to punish people who block that JavaScript loading from Google's servers. I can't think of another reason why there would be an 8-second delay for any user of a technology that (dubiously) is supposed to be about speed.