The incidious persistence of many systems of oppression can often be at least partially attributed to people in the “middle tears” actively participating in the system simply to avoid being the bottom rung…
To some, a candidate that will prop them up at the expense of a different group is a subconscious survival adaptation
So I wouldn’t say they’re dumb necessarily, just that they’ve been indoctrinated from childhood into the same system that keeps them down
(I say this as an Asian American that has had to really struggle with the duality of how I treated black and indigenous people in the past, during times when I understood and personally experienced the ill effects of racism. Time when I recognized and accepted that racism exists and claimed it unfair when it happened to me)