[kube-system]

They should, but then it only takes one misconfigured, or misbehaving machine to cause a data breach that, depending on the industry, could be a big headache and cost. At scale, with many employees, the chances of this happening approach 1.

Physical destruction is cheap and effective insurance against this.

[SoftTalker]

Yeah my employer policy is no hard drives are ever left in retired equipment. They get pulled and crushed.