See this is what I mean by people thinking "1e" means different things. To me when I think of AD&D 1e the last thing I think of are "rules that stay out of your way". To me the 1e AD&D rules were things that stifled creativity - I gave up trying to run AD&D and stuck with B/X or BECMI right up until 3e came out because 1e and 2e had lots of ticky-tacky rules that just got in my way and made the game less fun for me to run. (3e did too, but at least the rules were fairly cohesive and close enough to B/X that I was comfortable ignoring them when I needed to.)
But that was likely because of how the guys around me were running AD&D 1e. If I'd been around a different group of 1e gamers, I'd likely have kinder, more nostalgic thoughts for 1e AD&D than I do.
I found that ignoring entire sections of the rules worked just fine and didn't have the cascading impact on things that ignoring major parts of d20 did. So for me the tightly integrated system of 3e made the game more of a chore to modify to my liking.