I never would've put that together with portraying ability scores, but it makes sense.You are correct. The setting and interacting with it, whether through your PC as a Player or through everything else as a GM, is my top priority as a Player, GM, or designer. It is my primary reason to engage in the hobby.
There is a long thread about this in the D&D forum, but my take is let the players RP their characters however they like; their attributes only matter when it comes to making rolls for the specific situations described in the rules. There are lots of people who are brilliant in some ways and stupid in others (all people, actually), and the same is true of all the others. Thus, the rules just describe their attributes as they relate to specific dice rolls.I get it. So the DM is perhaps best-placed to roleplay some high PC attributes by removing a bit of mental 'fog of war'. Players would not be able to do this alone. But maybe players should be more responsible for sticking to their character's low scores. Make sense?