Earlier quoted context omitted.
Having a knack for these, I found these "lack" of hints (understanding goal, covered tiles, no precondition failed) to be part of the game, and making deduction/memory work for it. There was just enough for me to understand it. Had these hints been there I'd have been bored rather quickly.
I agree. It's similar to how Doom was initially whereas now every game is filled with explanations.
Play through portal with developer commentary, that's a masterpiece on how to use hints well without players even realizing.
Things like how hallways are structured, where light is shining, etc.