i think they were saying create a drm-free copy of the ebook, your point still stands

Is the only point of a copy like that for re-encoding? I assume you can do so with minimal loss in quality

How do you access it? the one I am seeing pinned seems to link to rentry?

From what I understand: During the compilation of the code it becomes unreadable to humans, needing to be reverse engineered, which is entails insane amounts of work. So, unless there is a leak or the game isn’t fully compiled like (I think) Unity games, it will be unlikely to find source code.