It depends on what your metrics are for energy and resources. Are you talking about the end user hardware, or are you talking about developer time and effort. If it’s the former, you’re right, if it’s the latter you’re completely wrong. And while there’s merit to your point (if it is about end user storage, energy consumption, etc), that’s not really in short supply while open source developers free time is.

Is there a specific part that you’re having trouble with? Is it more how it works under the hood, or more about using it to spin up containers? I can try to answer any questions and post some how tos for you.