See, my feeling with 4e is that it was BUILT TO BE PLAYED from the ground up. No, there wasn't a lot of impractical and useless trivia type lore. There was a TON of "when the PCs take these guys on here's how they operate, who they hang with, who their bosses are likely to be, etc." type of lore.
The same applies to things like FR. The thinking was "how do we make this interesting and engaging to PLAYERS" instead of just wool-gathering sort of endless trivia and whatnot. When they thought through the fundamental conflicts and driving factors arising within the milieu they made them straightforward, interesting, and gameable.
For me at least this was always the beauty of 4e, it is PRIMARILY an RPG at all levels. It consciously aimed to produce the best possible game experience in terms of lore, setting, etc. Very deliberate design!