That's fair, but the first line is: > Can we have the improved isolation of VMs, with the efficiency of containers? It's the "efficiency of containers" part I

That's fair, but the first line is: > Can we have the improved isolation of VMs, with the efficiency of containers? It's the "efficiency of containers" part I'm disagreeing with. They define "efficiency" as "start up time", and that doesn't affect my team's efficiency. We choose to make the tradeoff between much higher efficiency in our daily workflows, in exchange for slightly worse isolation (the level of isolation is acceptable for our use case given that we have multiple other layers of security).