This is the emails between the YouTuber YGK3D and Anycubic, it seems like they won’t send 3D printers to reviewers who mention their GPL3 license violations.
tl;dr Anycubic uses open-source software for their firmware, but doesn’t make it public as per license agreement, and they don’t seem to be friendly to anyone who calls this out.
More info: https://www.youtube.com/post/UgkxIMpZTkXqFo0H6pDwhZpdYqMYvLhPvWA5?lc=UgxA-4LYvwrnonXuXsZ4AaABAg
A lawyer should call this out, usually they care about that. I guess if they couldn’t sold their products in the US it would hurt them, I see they are Chinese, and it’s not unheard of if a Chinese company just ignores western IP and copyright laws.
It would be great if the EU and US blocked the sale of products that violate Open-Source liscences.
Should solve the problem fairly quickly