It's the trade off of having a mostly bleeding edge operating system. It's part of the reason why I wouldn't recommend Arch to beginners. While pretty rare, some update will eventually break part of your OS or cause other (often minor) issues and you should be knowledgeable enough/willing to look up the offending package and roll it back. It's up to the user to decide whether Arch's pros (massive software availability through official repos and the AUR, DIY approach, up-to-date packages) outweigh its cons.

As @TheAgeOfSuperboredom@lemmy.ca said (I can't tell if jokingly or not - lol), it is somewhat expected that an Arch user checks the Latest News section on archlinux.org before updating their system. Though I might add, I usually don't bother.