Yep, we used to setup these things with a bunch of different systems using our collection of Ansible playbooks. The playbooks are complex, so as to handle all kind of edge cases. Furthermore, since they are developed over a long period, the coding convention are not uniformed; it's quite hard to teach the new hires how to use and contribute to the playbooks.

We probably replaced tens of thousands line of Ansible code with a few thousands line of K8S code. We found the new code easier to maintain: because K8S is much stricter than Ansible, it's harder to deviate from the norm. Granted, we might be biased because K8S is all new and shiny, but so far we haven't regretted moving to K8S.