Lets see, in a universe where magic is real, not being able to use it IS a disability, not being as charming, strong, smart, dexterous, etc IS a disability. Which is why lower points can grant you a negative to add in rolls for that particular attribute.
Now, onto what the morally deficient moron who wrote that piece of garbage says.
So my character being dumb as a brick should not impact the rolls related to INT?
If my character looses all four limbs this should not impact his speed, jumping, etc?
If my character goes deaf it shouldn't impact his rolls to hear something?
These morons are trying to make "problematic"TM one aspect of the game that's trying to model reality to give it verisimilitude. Good for them, the number of people that hear/read that something is "problematic"TM and take it as a recommendation to go check it out is growing by the minute. The more idiotic shit they pull out of their collective asses the better.