So now you’re saying there are constraints? You just said there are no limits. You can run infinite containers. Why did you lie about this magic?

What withinboredom meant is that running processes in containers don't add overhead vs simply running them outside of them. That is mostly true because of the way that containers work in linux through cgroups and namespaces, which means that you would only be limited by what your hardware would already be able to run before running the processes in containers.