I think the author meant "Web developers", not specifically "JavaScript developers". There's just a very big overlap between the two.
So, Java and friends fits perfectly into this pattern. DevOps (saying as someone who used to be "Ops" w/o the "Dev") is also largely a Web phenomena. If you were exposed to Web development some time in your career, but then moved away from that, Kubernetes will definitely trigger PTSD in you. It's Web developers writing system software, and they don't really know how to do that.
So, Java and friends fits perfectly into this pattern. DevOps (saying as someone who used to be "Ops" w/o the "Dev") is also largely a Web phenomena. If you were exposed to Web development some time in your career, but then moved away from that, Kubernetes will definitely trigger PTSD in you. It's Web developers writing system software, and they don't really know how to do that.