One thing I notice is that even though "old school" D&D supposedly puts the DM in a much more authoritative position, I remember much more time spent arguing rules in the 80s. After a long break, coming back to the game with 5e, it feels like the DM has much more authority. For all the talk about collaboration and complaints I keep reading about overly entitled players, 5e seems to be played much less as game with rules than AD&D. Yes, it is partly because OD&D required you to fill in large gaps and AD&D rules were difficult to parse. But there was more of sense of game masters being referees and judges. "Rules lawyers" became a pejorative early on, but almost everyone I played with in 80s were rules lawyers to some extent. Challenging the DM on ruling now seems to be the height of poor gaming etiquette, which is a bit weird for a game when you think about it.