OpenStack didn't go away for large users who need to run IaaS/*aaS. OpenStack codebase is/was a giant, warm pile, but honestly k8s isn't all that either. I've heard and seen tons of k8s horror stories, I won't touch it. Give me Xen/KVM/ESXi to chop up a large box into a virtual lab and then Docker inside that on a custom Docker VM. These giant, support everything (poorly) "solutions" aren't all that helpful.

The problem of hype is that it's usually to evangelize marginal projects while better ones march along in obscurity.