Specifically, if you disable JavaScript entirely, they load cleanly (via the no script tag).
If you block just the amp js endpoint, they have a fallback for slow confections that waits a few seconds before rendering to avoid page redraws. This is the 8-second thing.
If you block just the amp js endpoint, they have a fallback for slow confections that waits a few seconds before rendering to avoid page redraws. This is the 8-second thing.