In some configurations, servers will not be running docker (due to e.g. resource constraints) and won't have systemd (e.g. {Free,Dragonfly,Open}BSD hosts). A good example of this are free services like serv00 that offer a small FreeBSD VPS as well as keeping your site up-and-running. But if you've got a domain elsewhere, or want your site to be accessible as a subdomain of something else, you're gonna need to put in the effort manually. It'd be very nice to have this running as a cronjob in these situations.

In my case I have a VPS elsewhere, but it still runs FreeBSD. And running Docker/Podman just for SSL certs seems a bit overkill - especially since I'm mostly serving some static files from it on the website end of things.

I think a less experimentative user could benefit from instructions on setting up "standalone" running of the Python scripts through cron rather than as a container