Why is this better than Certbot, which has more options and more support? Set up a daily cron to run the certbot-auto `--renew` flag and forget about it. Done.
This is a Debian norm. It's one that various Debian developers have tried to change over the years. The convention of having separate "run" packages exists and a few people adhere to it. (bcron-run, socklock-run, qmail-run, dqcache-run, bincimap-run, ...) But that convention is not (yet) the Debian norm. This is even though people have been regularly pushing for it since the turn of the century.