Automating updates is generally frowned upon, that’s when things can break. But waiting to run updates until you feel like it (instead of daily) is totally fine. I’ve been using Arch and its forks for years, and have always updated once a week unless something was wrong.
grml-zsh-config
is its name, and it’s always one of the first things I install on a fresh system. I’ll never understand why it isn’t the default.