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


All my friends who have one rave about the reliability. I can’t get one on principle. They’re all at the mercy of Bambu’s closed source firmware which means you’re always only one automatic update away from a required subscription.
I got gifted a P1S, so I use it. But I stopped updating the FW and use Orca Slicer with the printer in LAN mode. Not optimal, but better than completely giving the control away to Bambu Lab
Keep mine offline for that reason and I dont really need a firmware update (as long as they are not software locking replacement parts in the future, but in that case I am happy to trash the printer and never look back, its already payed itself of 100x)