Well, yeah.
Game companies also sold strategy guides at the time. They're designed to be obtuse. I'm pretty sure the full walkthrough for Leisure Suit Larry 1 is only 2 paragraphs or something.
The actual steps to the end are short, there's just always a puzzle where you have to use a rubber chicken with a bar of soap to make a helicopter or some shit. I love adventure games though, I'm just a walkthrough baby.