My point is, if someone is ignoring everything but the mechanical impacts of having a 7 INT fighter by “roleplaying” a smart character, they’re meta-gaming.
I disagree.
If you are roleplaying a low INT character as Sherlock Holmes, you’re not roleplaying, you’re acting.
Can you explain the distinction you are making here?
Stat emulation is part of roleplaying a personality.
Nonsense.
Stat emulation can be one guide to aspects of roleplaying a personality if you want, but even if you go with stat emulation, wildly different personalities can be used with the same stats. Optimist or pessimist, introvert versus extrovert, obsessed or carefree, nervous or confident. Any of these personality traits can go with any set of stats.
If you prefer to ignore stat emulation, mechanical stat balance has no meaning. The mental stats can be ditched unless someone needs them to cast spells. Min-Maxers rejoice.
And this is the problem I have with “just role-play it.” Without requiring players to take skills which meaningfully influence outcomes, a player can dump the value of the mental stats literally without consequence - if they’re not playing a spellcaster. The spellcaster doesn’t get to just ignore their physical stats, although I guess they can dump their non-critical mental ones just as readily as anyone else.
Nonsense.
The stat mechanics are not balanced around physically oriented characters not being smart or social in roleplay. They are balanced around everybody focusing on their class stuff to be competent and balanced in combat with straightforward builds that emphasize some things and dump others.
In 5e heavy armor fighters, clerics, and paladins can dump Dex and Int with minimal consequences. Wizards, sorcerers, and warlocks can dump Str with few consequences.
Everybody is incentivized to not dump Con across the board. Front line fighters who expect to be soaking up damage, and squishy back line artillery casters who are super vulnerable alike.
If you go with stat emulation then you go with only certain builds being smart or charismatic, the classes that focus on those stats who are up to expected class combat power, or those who go against their class combat stat builds to buff their non-combat roleplay stats. To play a Hannibal smart leader with innovative tactics roleplay concept and character approach you then have the choice of playing a high int wizard who is sacrificing no combat build, or a fighter who is giving up fighter build stat points to bump up his int.
I do not feel that benefits the game. I feel it is better to allow any roleplay concept for any character build.
If you divorce stats from roleplay then mechanical stat balance still has meaning. The expected builds and classes are still designed to be balanced. Fighters who focus on Strength and Con for their build do not become overpowered. Bards and Warlocks and Paladins with high Charisma do not become underpowered. A wizard's power is tied to their magic which is tied to their Int stat in many ways, not being tied to being the character who is allowed to roleplay being smart.
Every class with their expected build is designed to be balanced in combat for each player to participate meaningfully in combat. They should each be able to also participate in social interactions and cleverly addressing challenges and figuring things out that come up in the game as well.