Do you really need floating stat points to make a nerdy barbarian dwarf? Just put as many point into intelligence as possible. Why the need to give yourself even more? Can you roleplay better with it? Half-orc with 10 strength will be considered weak, do you really need 8 for your character fantasy?
I find hard to believe that anyone who considers a role play a big factor needs floating stat point to create a unique character.
When I said Nerdy Barbarian, you said Dwarf, why does it have to be a dwarf? Because they get the Barbarian stats. And that is where the problem lies. Nobody is saying you can't build anything you want, we're saying we don't want to be harshly punished for picking a race/class combination we want. What if I don't want to play a low mental stat Barbarian but want to be a -1 charisma Barbarian Tiefling? I can't. I just want to play as a rude and vulgar tiefling that doesn't know how to talk to people and gets angry easily, well too bad, I literally just can't. So no, you don't
need to change your racial ASI to play something viably, but you do
need it to properly portray character personality and history. If you can't understand that I just have to assume you don't roleplay as much as you powerplay simply because it's such a basic concept to have the character you want to play have the stats you want to have, the only person saying it
must be used to min-max is you. It doesn't have to be used to min max, it can, and is often, used to create a personality and projection of the characters history. I find it hard to believe someone doesn't think stats are important to roleplay, especially mental stats. A Wizard that is a teacher wouldn't have as much Wisdom as they would Charisma, because teaching takes Intelligence and Charisma. There are infinite character concepts out there and being able to customize stats expresses that even further.