> So that people can reboot their production systems two days apart?

A lot of people don't reboot their systems. They build new ones, shift workloads and traffic over, and decommission the old ones. I can do that multiple times a day if required with no disruption of services.

You don't have to stay patched if you judge the risk doesn't make it worth it, but Ubuntu is pretty much the only distro that made the choice for you.