"Copyleft licenses exist within the legal structure of copyrights. Despite what the name implies, copyleft isn't about abolishing copyrights. Rather, copyleft licenses are a subset of copyright licenses, and the goal is to restore freedom to users."
I asked that question as the GP made the case that breaking GPL is equivalent to pirating (breaking any other copyright). But GPL ensures a resource is always shareable and anyone who tries to break it would be limiting shareability of the resource, essentially it would be opposite of piracy.
If you use GPL software in non GPL code, you are still “pirating” the code and using it in a way that the person/group didn’t give you permission to use the license. This is no different than sharing any other copyrighted content. The copyright holder controls how the content is shared.
"Copyleft licenses exist within the legal structure of copyrights. Despite what the name implies, copyleft isn't about abolishing copyrights. Rather, copyleft licenses are a subset of copyright licenses, and the goal is to restore freedom to users."
https://www.makeuseof.com/tag/copyleft-copyright-key-concept...