> If I took someone's game, recreated it from scratch, and made a youtube video tutorial, "how to make this game including indistinguishable graphics, textures and gameplay" would the resulting video be infringing?
Key on this one is indistinguishable but there are many Minecraft clone type games by fans and Satisfactory is basically Factorio in 3D and the authors admit being inspired by Factorio. The other reality is that its also at the copyright owners discretion to make it an issue. Course if its fully original graphics it makes it harder to argue for copyright infringement I am sure.