[kube-system]

That sounds a little like having your cake and eating it too. 'Giving a fuck' is not really a boolean value but more of a broad spectrum.

Of course, anyone who writes any software cared a little bit about it at one point, or they wouldn't have written it. But warranty is about whether they care enough to cater specifically to you when you have a problem in the future.

Maybe many of these projects do care enough to give general updates to the community as a whole on a best effort basis, but that's a lower level of assurance and more voluntary than what you'd get in a legal warranty.