Hussar
Legend
Yeah, as a BECMI (and sometime 2e) player, I'd say we went more with the story-telling/role-playing than with tactical side of things. Sure, there were plenty of power-gamers and hack-and-slash players back then (and by the way, both tended to be frowned upon by RPG magazines) but there was nothing like the level of tactical obsession that is around today. AD&D was criticised for being rule-bound even back then, and there was nothing like the dissection of the rules going on by players.
All the character optimisation talk may simply be a function of the Internet, or an result of the play style from 3.0 onwards, or a result of the type of players attracted to the modern game, or a combination of all three - I'm not sure. While it's true most of us didn't have the Internet back then in order to discuss such things, it's worth noting that today's BECMI forums are not full of character optimisation talk.
There is a pretty simple explanation for that. It's virtually impossible to optimise an AD&D character. You have virtually no choices to make after you've created the character - everything is pretty much dictated to you at level up. I mean, what choices can you make after 1st level for any given character? It's not like you have any mechanics supporting the ability to optimise characters.
So, yeah, it does make sense that you'd get a lot more optimisation talk in a 3e forum than a BECMI one.