Yeah, like I said, I'm not defending this image in particular--most static sites aren't going to be very sensitive to autoscaling concerns. I was responding generally to your reasoning of "the host will just cache the image" which is often used to justify big images which in turn creates a lot of other (often pernicious) problems. To wit, with FaaS, autoscaling is highly optimized and tens of MBs can make a significant difference in latency.