It's "mostly static". I just tell my CDN to cache HTML for 10min. This makes the origin server load trivial but still makes updates go live fairly quickly.

Exactly. Mine is not static for example, but I’m a low traffic blog and it is not a problem yet.

I do. But that still falls well into the umbrella of WORM for me.

In practice, my SSG generates my RSS at the same time as my website and it's all running under Cloudflare Pages so it's just deployed and I don't have to think about any of it past the git commit.

I think that's what I'm trying to get at here. If you're dynamically generating RSS for a dynamic blog today, you've made some significant design errors.

No they haven’t. They just may have not yet optimised for a problem that they’re not facing. Most websites are very very low-traffic. A world exists outside of web scale. Sheesh.

This article is clearly about clients requesting a URL every 5 minutes is too much for them. They have this problem.