Windows 8 Windows 8.1 Update 1 is a Mandatory Update for Future Security Update Offerings

The article you provided highlights a critical point regarding Windows 8.1 Update 1—it is a mandatory update for future security update offerings. This means that regardless of whether you desire the keyboard and mouse enhancements included in the update, it is essential to install Update 1. Failure to do so will result in a lack of access to both security and non-security updates for computers that haven't received this update.
It's crucial to keep your system up to date with the latest Microsoft updates to ensure that your device remains secure and receives important patches to address any vulnerabilities. By installing Windows 8.1 Update 1, you can continue to benefit from these updates and maintain the security and functionality of your Windows 8.1 system.