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


SponsorBlock has been a huge help for me for the past 3+ years. Lets you skip all of these, as well as other things.
How does it detect the right parts of a video to skip, if it’s a soundbite from the video creator themselves? Live monitoring of the video with a detection model?
User submissions. There’s a leaderboard and people are crazy fast at submitting them. I’ve seen 30 minute videos have the sponsor sections blocked out within 10 minutes of being posted
As an example, here are the stats for my sponsor block: