FOSS lightweight ”virtual machine” (it’s not quite a VM but it’s similar conceptually. It’s much lighter on your system than a VM).
Easy to install, setting it up for your use case may take some coding if it isn’t common (bash scripting experience will help).
The source you linked doesn’t support your claims at all.
Some people got arrested relating to not following the law relating to the draft. Yes, that’s terrifying. It’s still not even remotely close to what you are claiming.