I've yet to see an argument where you simply MUST get that +3 to your main stat, for RP, while a +2 is just utterly unacceptable.
Orc Wizard He was cloistered and very educated. But mechanics gives him a 13, +1. Only average~above average. Him being really smart and scholarly is already failing. Should be a competent wizard, but a +1 is very far behind a +3 so he seems to others to be very weak, especially cause he only ever missed.
So my roleplay as a Orc Wizard, someone who isn't brutish and is supposed to be quite smart and competent in his own right, got boiled down to me failing and people noting that I was just bad at being both an Orc and a Wizard. Mechanics and character concept could not match. A competent character should only miss a few times a session, but a combination of bad luck and low stats meant I failed every kind of check related to my PRIMARY stat.
DnD is a roleplaying game. You want both roleplaying and game, and both are connected. Without one the other does not stand as well. Yes too strong or too minmaxed of a character can break RP but so can too weak of a character. I was able to roleplay initially but the game part breaking down meant the RP broke down. On another character, an aasimar celestial warlock, I was able to roleplay very effectively as a healer because mechanically I had that and
TLDR; Because DnD is a roleplaying game, both halves are important and contribute to eachother. Tasha's makes it easier to have a balance.
