Very well put. I add to that: with an E2E solution, you need to learn things before you deploy your system (still not that you do everything properly), but without that, it's possible to deploy the system, then learn things can go wrong when they actually happen. Now if you ask someone who has a half baked distributed system, they still don't know all the failure modes of their system. I've seen this in mission-critical systems.
But in a company that had properly reliable infrastructure, any system that moved to the new infra based on K8s needed much less maintenance, had much more standardized DevOps (which allowed people from other teams to chime in when needed), and had much fewer mistakes. There was no disagreement that K8s stramlined everything.
But in a company that had properly reliable infrastructure, any system that moved to the new infra based on K8s needed much less maintenance, had much more standardized DevOps (which allowed people from other teams to chime in when needed), and had much fewer mistakes. There was no disagreement that K8s stramlined everything.