Anyway, I really view those games as the last of the nearly impossible games that were everywhere in the 1980s. And not just adventure games, a lot of arcade games were the same way, I played conan https://en.wikipedia.org/wiki/Conan:_Hall_of_Volta for probably 4 months straight before I beat its 7 (?) lousy screens. 99% of the difficulty was basically being able to play it perfectly for the ~15 mins it takes to win. If you added a save game feature it would have probably only taken a couple hours.
If you watch the playthroughs on youtube, the difficulty is completely not evident. Another one like that was Dragons Liar.
On the plus side, the incredible rush one got when figuring out a puzzle after spending days on it is maybe part of the reason a lot of modern games simply aren't fun.