> Did correcting the others make them more fun?

I don't generally find correcting others fun, unless they don't take it well and make a scene about it in which case that can certainly be some delicious schadenfreude. That doesn't happen with the game group, they're generally receptive.

I think the games probably got more fun though. Presumably those rules are there for a reason, and it's not like I'm staring at the rulebook the whole time. I either had a question come up as a part of gameplay the group couldn't answer confidently or something didn't feel right about how the game was playing so I checked and found what I found. On more than one occasion this has led to someone else in the group pointing out some other related element they had found weird until then.

Rules are generally made deliberately, but I've known more than one game that was made more fun by an accidental misreading of the rules. When a rule mistake is important enough to spoil a game, or breaks the consistency, one generally notices. I guess it's possible for a game to just be silently slightly less fun than it should be because of a rule mistake, but I haven't seen it happen much. Which possibly says something about the value of complex rules with lots of special cases.