Bootless kernel updates are a wonderful tool if one runs one server or a thousand. The vendors such as Ksplice and KernelCare are able to push out patches much faster then one may receive a notice of a important update. And they are called bootless for a reason
Really no need to reboot into the kernel after patch has been applied.
Now once I start to think about CL and KernelCare as a bundle. It makes even more sense. As CloudLinux is modified kernel instead of CL saying please update kernel due to ______ His system just automatically patches the kernel. It really is a tidy little system those two items bundled together. Even though one needs not to run CL to run KernelCare.