I think one short answer is that many static sites aren't "at scale" when they start and probably will never get there. But if they do, this feature is sort of

I think one short answer is that many static sites aren't "at scale" when they start and probably will never get there. But if they do, this feature is sort of insurance. I'm a backend dev / DevOps engineer, so you might get a different take from someone who works in frontend daily.