If you go a long time without updating there are generally lots of updates. So when you update sometimes you can have dependency issues. Basic maintenance prevents this.
Personally I never have this issue and generally don’t have any issues with Arch. Truly have no idea why people think it’s unstable. Maybe bad experiences with Manjaro which is Arch based. Now that distro has stability issues! Garuda and vanilla arch have been rock solid as far as my experience goes.