That's not actually something to brag about, as it implies they weren't receiving important kernel updates, particularly security updates.
That said. We communicate directly with other systems on the same premises that probably haven't been rebooted in over a decade.
Building something that can run 10 years without downtime is not happenstance. It is very intentional and deliberate engineering.
Allows you to patch the kernel without reboot.
That's not actually something to brag about, as it implies they weren't receiving important kernel updates, particularly security updates.