Do you believe front-end CSS / HTML designers should understand the entire stack down to the machine code and hardware running the VMs? I don't think I can agree with this, our stacks are too tall these days.
I think this actually gets at an important distinction. Are Data Scientists more like designers or developers? UX designers shouldn't need to know anything about k8s (or any other infrastructure) but developers should. Ultimately if you are not only responsible for building something but also running it in production and maintaining availability then you need to understand the infrastructure it runs on to some degree.