I disagree that hype leads to the problem you describe. Kubernetes is good at its job, and therefore it's popular, and therefore it's used by people who may not understand it.
You could say the exact same thing about Linux, Cisco, Dell, or pretty much any of the popular FOSS projects. Popular things, regardless of their complexity, get chosen by people of all experience levels. Inexperienced people are less likely to properly configure something, regardless of its popularity or hype.
If anything, having a few attractive projects tends to be beneficial (or at least neutral) for security as there are so many more people scrutinizing it, and many more people learning how to properly use it.
You could say the exact same thing about Linux, Cisco, Dell, or pretty much any of the popular FOSS projects. Popular things, regardless of their complexity, get chosen by people of all experience levels. Inexperienced people are less likely to properly configure something, regardless of its popularity or hype.
If anything, having a few attractive projects tends to be beneficial (or at least neutral) for security as there are so many more people scrutinizing it, and many more people learning how to properly use it.