We have decided some brain quirks are disorders (and get accommodations, as is compassionate), whilst others are flaws (and get slurs). But no one picks their hardware. You cannot earn a better prefrontal cortex or deserve a calmer amygdala. Nor does one get to pick the environment they are born in, which will inform their choices later in life. Even the capacity to “learn better” is a roll of the dice, some brains start the race with sprinting shoes, others with lead weights.
So when we call someone stupid, lazy or insane we are not describing a choice, but simply announcing which kinds of unlucky we’ve decided are worthy of scorn.
Deviation from the norm of course is (afaik) the main driver of evolution. The chaotic approach. Trying out gene variations and sometimes stumbling upon a advantageous evolutionary trait. Is this about right? Because of their diversity humankind was able to adapt to changing environmental conditions. Diversity is a survival trait of humankind. At least it was for a long time. I am not sure how much this is true in the modern world