I am solo builder and runner of https://atomictesselator.com and I have used k8s from day one. I also agree with you, it's been rock solid, and the ability to horizontally scale so easily is great. I dont even know which physical machines in my rack the jobs/pods are running on, I just have a high level dashboard (lens) and I can see the CPU+GPU utilization hit 100% as everything self balances, it's great, this has been very helpful scaling my GPU workload which has increased a lot recently